CVE-2024-26882 (GCVE-0-2024-26882)

Vulnerability from cvelistv5 – Published: 2024-04-17 10:27 – Updated: 2026-08-05 11:28
VLAI
Title
net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv() Apply the same fix than ones found in : 8d975c15c0cd ("ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()") 1ca1ba465e55 ("geneve: make sure to pull inner header in geneve_rx()") We have to save skb->network_header in a temporary variable in order to be able to recompute the network_header pointer after a pskb_inet_may_pull() call. pskb_inet_may_pull() makes sure the needed headers are in skb->head. syzbot reported: BUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline] BUG: KMSAN: uninit-value in ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline] ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ip_gre.c:389 ipgre_rcv net/ipv4/ip_gre.c:411 [inline] gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447 gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163 ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [inline] ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:461 [inline] ip_rcv_finish net/ipv4/ip_input.c:449 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569 __netif_receive_skb_one_core net/core/dev.c:5534 [inline] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648 netif_receive_skb_internal net/core/dev.c:5734 [inline] netif_receive_skb+0x58/0x660 net/core/dev.c:5793 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1556 tun_get_user+0x53b9/0x66e0 drivers/net/tun.c:2009 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055 call_write_iter include/linux/fs.h:2087 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0xb6b/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133 alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204 skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909 tun_build_skb drivers/net/tun.c:1686 [inline] tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055 call_write_iter include/linux/fs.h:2087 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0xb6b/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b
Severity
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c54419321455631079c7d6e60bc732dd0c5914c5 , < ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b (git)
Affected: c54419321455631079c7d6e60bc732dd0c5914c5 , < 77fd5294ea09b21f6772ac954a121b87323cec80 (git)
Affected: c54419321455631079c7d6e60bc732dd0c5914c5 , < 5c03387021cfa3336b97e0dcba38029917a8af2a (git)
Affected: c54419321455631079c7d6e60bc732dd0c5914c5 , < 60044ab84836359534bd7153b92e9c1584140e4a (git)
Affected: c54419321455631079c7d6e60bc732dd0c5914c5 , < c4c857723b37c20651300b3de4ff25059848b4b0 (git)
Affected: c54419321455631079c7d6e60bc732dd0c5914c5 , < f6723d8dbfdc10c784a56748f86a9a3cd410dbd5 (git)
Affected: c54419321455631079c7d6e60bc732dd0c5914c5 , < ca914f1cdee8a85799942c9b0ce5015bbd6844e1 (git)
Affected: c54419321455631079c7d6e60bc732dd0c5914c5 , < b0ec2abf98267f14d032102551581c833b0659d3 (git)
Create a notification for this product.
Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 5.4.273 , ≤ 5.4.* (semver)
Unaffected: 5.10.214 , ≤ 5.10.* (semver)
Unaffected: 5.15.153 , ≤ 5.15.* (semver)
Unaffected: 6.1.83 , ≤ 6.1.* (semver)
Unaffected: 6.6.23 , ≤ 6.6.* (semver)
Unaffected: 6.7.11 , ≤ 6.7.* (semver)
Unaffected: 6.8.2 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
Create a notification for this product.
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()\n\nApply the same fix than ones found in :\n\n8d975c15c0cd (\"ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()\")\n1ca1ba465e55 (\"geneve: make sure to pull inner header in geneve_rx()\")\n\nWe have to save skb-\u003enetwork_header in a temporary variable\nin order to be able to recompute the network_header pointer\nafter a pskb_inet_may_pull() call.\n\npskb_inet_may_pull() makes sure the needed headers are in skb-\u003ehead.\n\nsyzbot reported:\nBUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\n BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\n BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\n BUG: KMSAN: uninit-value in ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\n  __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\n  INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\n  IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\n  ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\n  __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ip_gre.c:389\n  ipgre_rcv net/ipv4/ip_gre.c:411 [inline]\n  gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447\n  gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163\n  ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205\n  ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233\n  NF_HOOK include/linux/netfilter.h:314 [inline]\n  ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254\n  dst_input include/net/dst.h:461 [inline]\n  ip_rcv_finish net/ipv4/ip_input.c:449 [inline]\n  NF_HOOK include/linux/netfilter.h:314 [inline]\n  ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569\n  __netif_receive_skb_one_core net/core/dev.c:5534 [inline]\n  __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648\n  netif_receive_skb_internal net/core/dev.c:5734 [inline]\n  netif_receive_skb+0x58/0x660 net/core/dev.c:5793\n  tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1556\n  tun_get_user+0x53b9/0x66e0 drivers/net/tun.c:2009\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\n  call_write_iter include/linux/fs.h:2087 [inline]\n  new_sync_write fs/read_write.c:497 [inline]\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\n  __do_sys_write fs/read_write.c:655 [inline]\n  __se_sys_write fs/read_write.c:652 [inline]\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nUninit was created at:\n  __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590\n  alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133\n  alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204\n  skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909\n  tun_build_skb drivers/net/tun.c:1686 [inline]\n  tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\n  call_write_iter include/linux/fs.h:2087 [inline]\n  new_sync_write fs/read_write.c:497 [inline]\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\n  __do_sys_write fs/read_write.c:655 [inline]\n  __se_sys_write fs/read_write.c:652 [inline]\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b"
        }
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            {
              "lang": "en",
              "value": "AV:N - The vulnerable code runs in the GRE/gretap/ERSPAN/ipip/sit decapsulation receive path (`gre_rcv` \u2192 `__ipgre_rcv` \u2192 `ip_tunnel_rcv`), processing IP protocol 47/4/41 packets routed from anywhere on the internet. A remote attacker produces the required non-linear skb deterministically by IP-fragmenting the tunnel packet so reassembly leaves the linear area ending at the inner network header.\nAC:L - The attacker fully controls the packet layout: `pskb_may_pull()`/`__pskb_pull_tail()` pull exactly the requested bytes, so a chosen fragment split reliably leaves zero linear bytes at the inner header on every packet, and for gretap/ERSPAN the `pskb_may_pull(ETH_HLEN)` in `__iptunnel_pull_header()` lands the boundary automatically.\nPR:N - GRE and IPIP/SIT have no authentication whatsoever, and `ip_tunnel_lookup()` has wildcard-remote, collect_md and fallback-device passes that match packets from any source address, so no account or credentials on the target are required.\nUI:N - Decapsulation happens automatically in softirq context on packet receipt; no action by any local user or administrator is needed beyond the tunnel already being configured and up.\nS:U - The uninitialized read and the resulting mis-handled packet stay entirely within the kernel\u0027s own security authority; no VM, IOMMU, container or sandbox boundary is crossed.\nC:L - One to two bytes of uninitialized/stale kernel memory past `skb_tail_pointer()` (heap padding or `skb_shared_info` bytes) are read, and their low ECN bits are inferable by the attacker from whether the tunneled packet is delivered or dropped \u2014 a real but strictly bounded, low-bandwidth disclosure oracle rather than arbitrary memory read.\nI:L - No out-of-bounds write is reachable because `INET_ECN_set_ce()`/`INET_ECN_set_ect1()` bounds-check against the tail pointer, but the RFC 6040 decapsulation decision \u2014 whether the congestion (CE) signal is propagated to the inner packet and whether the frame is accepted \u2014 is driven by uninitialized memory, corrupting the ECN state of legitimate decapsulated traffic.\nA:L - The read always stays inside the skb head allocation (`skb_shared_info` follows `skb-\u003eend`), so no oops or panic is reachable on a production kernel; the effect is that legitimate tunneled packets are non-deterministically dropped via the `err \u003e 1` path (`rx_frame_errors`/`rx_errors`), degrading the tunnel rather than the host."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:28:07.358Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b"
        },
        {
          "url": "https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80"
        },
        {
          "url": "https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2a"
        },
        {
          "url": "https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4a"
        },
        {
          "url": "https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0"
        },
        {
          "url": "https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1"
        },
        {
          "url": "https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3"
        }
      ],
      "title": "net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26882",
    "datePublished": "2024-04-17T10:27:38.389Z",
    "dateReserved": "2024-02-19T14:20:24.185Z",
    "dateUpdated": "2026-08-05T11:28:07.358Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-26882",
      "date": "2026-08-10",
      "epss": "0.00689",
      "percentile": "0.49342"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"3.10\", \"versionEndExcluding\": \"5.4.273\", \"matchCriteriaId\": \"4D065436-A1F0-4367-A345-B448C4CF1F74\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.214\", \"matchCriteriaId\": \"65987874-467B-4D3B-91D6-68A129B34FB8\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.153\", \"matchCriteriaId\": \"ACB69438-845D-4E3C-B114-3140611F9C0B\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.83\", \"matchCriteriaId\": \"121A07F6-F505-4C47-86BF-9BB6CC7B6C19\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.23\", \"matchCriteriaId\": \"E00814DC-0BA7-431A-9926-80FEB4A96C68\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.7.11\", \"matchCriteriaId\": \"9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.8\", \"versionEndExcluding\": \"6.8.2\", \"matchCriteriaId\": \"543A75FF-25B8-4046-A514-1EA8EDD87AB1\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()\\n\\nApply the same fix than ones found in :\\n\\n8d975c15c0cd (\\\"ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()\\\")\\n1ca1ba465e55 (\\\"geneve: make sure to pull inner header in geneve_rx()\\\")\\n\\nWe have to save skb-\u003enetwork_header in a temporary variable\\nin order to be able to recompute the network_header pointer\\nafter a pskb_inet_may_pull() call.\\n\\npskb_inet_may_pull() makes sure the needed headers are in skb-\u003ehead.\\n\\nsyzbot reported:\\nBUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\\n BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\\n BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\\n BUG: KMSAN: uninit-value in ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\\n  __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\\n  INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\\n  IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\\n  ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\\n  __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ip_gre.c:389\\n  ipgre_rcv net/ipv4/ip_gre.c:411 [inline]\\n  gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447\\n  gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163\\n  ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205\\n  ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254\\n  dst_input include/net/dst.h:461 [inline]\\n  ip_rcv_finish net/ipv4/ip_input.c:449 [inline]\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569\\n  __netif_receive_skb_one_core net/core/dev.c:5534 [inline]\\n  __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648\\n  netif_receive_skb_internal net/core/dev.c:5734 [inline]\\n  netif_receive_skb+0x58/0x660 net/core/dev.c:5793\\n  tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1556\\n  tun_get_user+0x53b9/0x66e0 drivers/net/tun.c:2009\\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\\n  call_write_iter include/linux/fs.h:2087 [inline]\\n  new_sync_write fs/read_write.c:497 [inline]\\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\\n  __do_sys_write fs/read_write.c:655 [inline]\\n  __se_sys_write fs/read_write.c:652 [inline]\\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\\n\\nUninit was created at:\\n  __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590\\n  alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133\\n  alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204\\n  skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909\\n  tun_build_skb drivers/net/tun.c:1686 [inline]\\n  tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826\\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\\n  call_write_iter include/linux/fs.h:2087 [inline]\\n  new_sync_write fs/read_write.c:497 [inline]\\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\\n  __do_sys_write fs/read_write.c:655 [inline]\\n  __se_sys_write fs/read_write.c:652 [inline]\\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: ip_tunnel: aseg\\u00farese de extraer el encabezado interno en ip_tunnel_rcv(). Aplique la misma soluci\\u00f3n que las encontradas en: 8d975c15c0cd (\\\"ip6_tunnel: aseg\\u00farese de extraer el encabezado interno en __ip6_tnl_rcv() \\\") 1ca1ba465e55 (\\\"geneve: aseg\\u00farese de extraer el encabezado interno en geneve_rx()\\\") Tenemos que guardar skb-\u0026gt;network_header en una variable temporal para poder volver a calcular el puntero network_header despu\\u00e9s de una llamada a pskb_inet_may_pull(). pskb_inet_may_pull() se asegura de que los encabezados necesarios est\\u00e9n en skb-\u0026gt;head. syzbot inform\\u00f3: ERROR: KMSAN: valor uninit en __INET_ECN_decapsulate include/net/inet_ecn.h:253 [en l\\u00ednea] ERROR: KMSAN: valor uninit en INET_ECN_decapsulate include/net/inet_ecn.h:275 [en l\\u00ednea] ERROR: KMSAN: uninit -valor en IP_ECN_decapsulate include/net/inet_ecn.h:302 [en l\\u00ednea] ERROR: KMSAN: valor uninit en ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __INET_ECN_decapsulate include/net/inet_ecn.h:253 [en l\\u00ednea ] INET_ECN_decapsulate include/net/inet_ecn.h:275 [en l\\u00ednea] IP_ECN_decapsulate include/net/inet_ecn.h:302 [en l\\u00ednea] ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ ip_gre.c:389 ipgre_rcv net/ipv4/ip_gre.c:411 [en l\\u00ednea] gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447 gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163 ip_protocol_deliver_rcu+0x264/ 0x1300 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [en l\\u00ednea] ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c: 254 dst_input include/net/dst.h:461 [en l\\u00ednea] ip_rcv_finish net/ipv4/ip_input.c:449 [en l\\u00ednea] NF_HOOK include/linux/netfilter.h:314 [en l\\u00ednea] ip_rcv+0x46f/0x760 net/ipv4/ip_input .c:569 __netif_receive_skb_one_core net/core/dev.c:5534 [en l\\u00ednea] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648 netif_receive_skb_internal net/core/dev.c:5734 [en l\\u00ednea] neto /core/dev.c:5793 tun_rx_batched+0x3ee/0x980 controladores/net/tun.c:1556 tun_get_user+0x53b9/0x66e0 controladores/net/tun.c:2009 tun_chr_write_iter+0x3af/0x5d0 controladores/net/tun.c:2055 call_write_iter include/linux/fs.h:2087 [en l\\u00ednea] new_sync_write fs/read_write.c:497 [en l\\u00ednea] vfs_write+0xb6b/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs /read_write.c:655 [en l\\u00ednea] __se_sys_write fs/read_write.c:652 [en l\\u00ednea] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:52 [en l\\u00ednea] do_syscall_64+0xcf /0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit se cre\\u00f3 en: __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133 alloc_pages+ 0x1be /0x1e0 mm/mempolicy.c:2204 skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909 tun_build_skb drivers/net/tun.c:1686 [en l\\u00ednea] tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055 call_write_iter include/linux/fs.h:2087 [en l\\u00ednea] new_sync_write fs/read_write.c:497 [en l\\u00ednea] vfs_write+0xb6b/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [en l\\u00ednea] __se_sys_write fs/read_write.c:652 [en l\\u00ednea] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch /x86 /entry/common.c:52 [en l\\u00ednea] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x63/0x6b\"}]",
      "id": "CVE-2024-26882",
      "lastModified": "2024-12-20T13:15:20.370",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}, {\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"LOW\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}]}",
      "published": "2024-04-17T11:15:10.060",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20241220-0002/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-noinfo\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T03:00:46.000Z",
      "cve": "CVE-2024-26882",
      "id": "msrc_CVE-2024-26882",
      "initial_release_date": "2024-04-02T07:00:00.000Z",
      "product_status:fixed": "2",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-26882.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26882\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-17T11:15:10.060\",\"lastModified\":\"2026-08-04T11:17:17.587\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()\\n\\nApply the same fix than ones found in :\\n\\n8d975c15c0cd (\\\"ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()\\\")\\n1ca1ba465e55 (\\\"geneve: make sure to pull inner header in geneve_rx()\\\")\\n\\nWe have to save skb-\u003enetwork_header in a temporary variable\\nin order to be able to recompute the network_header pointer\\nafter a pskb_inet_may_pull() call.\\n\\npskb_inet_may_pull() makes sure the needed headers are in skb-\u003ehead.\\n\\nsyzbot reported:\\nBUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\\n BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\\n BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\\n BUG: KMSAN: uninit-value in ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\\n  __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\\n  INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\\n  IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\\n  ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\\n  __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ip_gre.c:389\\n  ipgre_rcv net/ipv4/ip_gre.c:411 [inline]\\n  gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447\\n  gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163\\n  ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205\\n  ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254\\n  dst_input include/net/dst.h:461 [inline]\\n  ip_rcv_finish net/ipv4/ip_input.c:449 [inline]\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569\\n  __netif_receive_skb_one_core net/core/dev.c:5534 [inline]\\n  __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648\\n  netif_receive_skb_internal net/core/dev.c:5734 [inline]\\n  netif_receive_skb+0x58/0x660 net/core/dev.c:5793\\n  tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1556\\n  tun_get_user+0x53b9/0x66e0 drivers/net/tun.c:2009\\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\\n  call_write_iter include/linux/fs.h:2087 [inline]\\n  new_sync_write fs/read_write.c:497 [inline]\\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\\n  __do_sys_write fs/read_write.c:655 [inline]\\n  __se_sys_write fs/read_write.c:652 [inline]\\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\\n\\nUninit was created at:\\n  __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590\\n  alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133\\n  alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204\\n  skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909\\n  tun_build_skb drivers/net/tun.c:1686 [inline]\\n  tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826\\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\\n  call_write_iter include/linux/fs.h:2087 [inline]\\n  new_sync_write fs/read_write.c:497 [inline]\\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\\n  __do_sys_write fs/read_write.c:655 [inline]\\n  __se_sys_write fs/read_write.c:652 [inline]\\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: ip_tunnel: aseg\u00farese de extraer el encabezado interno en ip_tunnel_rcv(). Aplique la misma soluci\u00f3n que las encontradas en: 8d975c15c0cd (\\\"ip6_tunnel: aseg\u00farese de extraer el encabezado interno en __ip6_tnl_rcv() \\\") 1ca1ba465e55 (\\\"geneve: aseg\u00farese de extraer el encabezado interno en geneve_rx()\\\") Tenemos que guardar skb-\u0026gt;network_header en una variable temporal para poder volver a calcular el puntero network_header despu\u00e9s de una llamada a pskb_inet_may_pull(). pskb_inet_may_pull() se asegura de que los encabezados necesarios est\u00e9n en skb-\u0026gt;head. syzbot inform\u00f3: ERROR: KMSAN: valor uninit en __INET_ECN_decapsulate include/net/inet_ecn.h:253 [en l\u00ednea] ERROR: KMSAN: valor uninit en INET_ECN_decapsulate include/net/inet_ecn.h:275 [en l\u00ednea] ERROR: KMSAN: uninit -valor en IP_ECN_decapsulate include/net/inet_ecn.h:302 [en l\u00ednea] ERROR: KMSAN: valor uninit en ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __INET_ECN_decapsulate include/net/inet_ecn.h:253 [en l\u00ednea ] INET_ECN_decapsulate include/net/inet_ecn.h:275 [en l\u00ednea] IP_ECN_decapsulate include/net/inet_ecn.h:302 [en l\u00ednea] ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ ip_gre.c:389 ipgre_rcv net/ipv4/ip_gre.c:411 [en l\u00ednea] gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447 gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163 ip_protocol_deliver_rcu+0x264/ 0x1300 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [en l\u00ednea] ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c: 254 dst_input include/net/dst.h:461 [en l\u00ednea] ip_rcv_finish net/ipv4/ip_input.c:449 [en l\u00ednea] NF_HOOK include/linux/netfilter.h:314 [en l\u00ednea] ip_rcv+0x46f/0x760 net/ipv4/ip_input .c:569 __netif_receive_skb_one_core net/core/dev.c:5534 [en l\u00ednea] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648 netif_receive_skb_internal net/core/dev.c:5734 [en l\u00ednea] neto /core/dev.c:5793 tun_rx_batched+0x3ee/0x980 controladores/net/tun.c:1556 tun_get_user+0x53b9/0x66e0 controladores/net/tun.c:2009 tun_chr_write_iter+0x3af/0x5d0 controladores/net/tun.c:2055 call_write_iter include/linux/fs.h:2087 [en l\u00ednea] new_sync_write fs/read_write.c:497 [en l\u00ednea] vfs_write+0xb6b/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs /read_write.c:655 [en l\u00ednea] __se_sys_write fs/read_write.c:652 [en l\u00ednea] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcf /0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit se cre\u00f3 en: __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133 alloc_pages+ 0x1be /0x1e0 mm/mempolicy.c:2204 skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909 tun_build_skb drivers/net/tun.c:1686 [en l\u00ednea] tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055 call_write_iter include/linux/fs.h:2087 [en l\u00ednea] new_sync_write fs/read_write.c:497 [en l\u00ednea] vfs_write+0xb6b/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [en l\u00ednea] __se_sys_write fs/read_write.c:652 [en l\u00ednea] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch /x86 /entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x63/0x6b\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/ipv4/ip_tunnel.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"c54419321455631079c7d6e60bc732dd0c5914c5\",\"lessThan\":\"ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c54419321455631079c7d6e60bc732dd0c5914c5\",\"lessThan\":\"77fd5294ea09b21f6772ac954a121b87323cec80\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c54419321455631079c7d6e60bc732dd0c5914c5\",\"lessThan\":\"5c03387021cfa3336b97e0dcba38029917a8af2a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c54419321455631079c7d6e60bc732dd0c5914c5\",\"lessThan\":\"60044ab84836359534bd7153b92e9c1584140e4a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c54419321455631079c7d6e60bc732dd0c5914c5\",\"lessThan\":\"c4c857723b37c20651300b3de4ff25059848b4b0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c54419321455631079c7d6e60bc732dd0c5914c5\",\"lessThan\":\"f6723d8dbfdc10c784a56748f86a9a3cd410dbd5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c54419321455631079c7d6e60bc732dd0c5914c5\",\"lessThan\":\"ca914f1cdee8a85799942c9b0ce5015bbd6844e1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c54419321455631079c7d6e60bc732dd0c5914c5\",\"lessThan\":\"b0ec2abf98267f14d032102551581c833b0659d3\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/ipv4/ip_tunnel.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.273\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.214\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.153\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.83\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.23\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.7.11\",\"lessThanOrEqual\":\"6.7.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8.2\",\"lessThanOrEqual\":\"6.8.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L\",\"baseScore\":7.3,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":3.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-07-16T18:00:36.614107Z\",\"id\":\"CVE-2024-26882\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.10\",\"versionEndExcluding\":\"5.4.273\",\"matchCriteriaId\":\"4D065436-A1F0-4367-A345-B448C4CF1F74\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.214\",\"matchCriteriaId\":\"65987874-467B-4D3B-91D6-68A129B34FB8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.153\",\"matchCriteriaId\":\"ACB69438-845D-4E3C-B114-3140611F9C0B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.83\",\"matchCriteriaId\":\"121A07F6-F505-4C47-86BF-9BB6CC7B6C19\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.23\",\"matchCriteriaId\":\"E00814DC-0BA7-431A-9926-80FEB4A96C68\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.7.11\",\"matchCriteriaId\":\"9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.8\",\"versionEndExcluding\":\"6.8.2\",\"matchCriteriaId\":\"543A75FF-25B8-4046-A514-1EA8EDD87AB1\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20241220-0002/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T22:49:30+00:00",
      "cve": "CVE-2024-26882",
      "id": "CVE-2024-26882",
      "initial_release_date": "2024-04-17T00:00:00+00:00",
      "product_status:fixed": "280",
      "product_status:known_affected": "112",
      "product_status:known_not_affected": "8",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26882.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-05T01:00:42Z",
      "cve": "CVE-2024-26882",
      "id": "CVE-2024-26882",
      "initial_release_date": "2024-04-19T02:18:35Z",
      "product_status:known_affected": "581",
      "product_status:known_not_affected": "6",
      "product_status:recommended": "674",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-26882",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26882.json",
      "version": "98"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2a\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4a\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20241220-0002/\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-12-20T13:06:43.371Z\"}}, {\"affected\": [{\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"x_adpType\": \"supplier\", \"references\": [{\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\"}], \"providerMetadata\": {\"orgId\": \"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\", \"shortName\": \"siemens-SADP\", \"dateUpdated\": \"2026-05-12T11:50:05.762Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26882\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-07-16T18:00:36.614107Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-07-16T18:00:48.427Z\"}}], \"cna\": {\"title\": \"net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.3, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:N - The vulnerable code runs in the GRE/gretap/ERSPAN/ipip/sit decapsulation receive path (`gre_rcv` \\u2192 `__ipgre_rcv` \\u2192 `ip_tunnel_rcv`), processing IP protocol 47/4/41 packets routed from anywhere on the internet. A remote attacker produces the required non-linear skb deterministically by IP-fragmenting the tunnel packet so reassembly leaves the linear area ending at the inner network header.\\nAC:L - The attacker fully controls the packet layout: `pskb_may_pull()`/`__pskb_pull_tail()` pull exactly the requested bytes, so a chosen fragment split reliably leaves zero linear bytes at the inner header on every packet, and for gretap/ERSPAN the `pskb_may_pull(ETH_HLEN)` in `__iptunnel_pull_header()` lands the boundary automatically.\\nPR:N - GRE and IPIP/SIT have no authentication whatsoever, and `ip_tunnel_lookup()` has wildcard-remote, collect_md and fallback-device passes that match packets from any source address, so no account or credentials on the target are required.\\nUI:N - Decapsulation happens automatically in softirq context on packet receipt; no action by any local user or administrator is needed beyond the tunnel already being configured and up.\\nS:U - The uninitialized read and the resulting mis-handled packet stay entirely within the kernel\u0027s own security authority; no VM, IOMMU, container or sandbox boundary is crossed.\\nC:L - One to two bytes of uninitialized/stale kernel memory past `skb_tail_pointer()` (heap padding or `skb_shared_info` bytes) are read, and their low ECN bits are inferable by the attacker from whether the tunneled packet is delivered or dropped \\u2014 a real but strictly bounded, low-bandwidth disclosure oracle rather than arbitrary memory read.\\nI:L - No out-of-bounds write is reachable because `INET_ECN_set_ce()`/`INET_ECN_set_ect1()` bounds-check against the tail pointer, but the RFC 6040 decapsulation decision \\u2014 whether the congestion (CE) signal is propagated to the inner packet and whether the frame is accepted \\u2014 is driven by uninitialized memory, corrupting the ECN state of legitimate decapsulated traffic.\\nA:L - The read always stays inside the skb head allocation (`skb_shared_info` follows `skb-\u003eend`), so no oops or panic is reachable on a production kernel; the effect is that legitimate tunneled packets are non-deterministically dropped via the `err \u003e 1` path (`rx_frame_errors`/`rx_errors`), degrading the tunnel rather than the host.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"c54419321455631079c7d6e60bc732dd0c5914c5\", \"lessThan\": \"ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c54419321455631079c7d6e60bc732dd0c5914c5\", \"lessThan\": \"77fd5294ea09b21f6772ac954a121b87323cec80\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c54419321455631079c7d6e60bc732dd0c5914c5\", \"lessThan\": \"5c03387021cfa3336b97e0dcba38029917a8af2a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c54419321455631079c7d6e60bc732dd0c5914c5\", \"lessThan\": \"60044ab84836359534bd7153b92e9c1584140e4a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c54419321455631079c7d6e60bc732dd0c5914c5\", \"lessThan\": \"c4c857723b37c20651300b3de4ff25059848b4b0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c54419321455631079c7d6e60bc732dd0c5914c5\", \"lessThan\": \"f6723d8dbfdc10c784a56748f86a9a3cd410dbd5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c54419321455631079c7d6e60bc732dd0c5914c5\", \"lessThan\": \"ca914f1cdee8a85799942c9b0ce5015bbd6844e1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c54419321455631079c7d6e60bc732dd0c5914c5\", \"lessThan\": \"b0ec2abf98267f14d032102551581c833b0659d3\", \"versionType\": \"git\"}], \"programFiles\": [\"net/ipv4/ip_tunnel.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.273\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.214\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.153\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.83\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.23\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/ipv4/ip_tunnel.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b\"}, {\"url\": \"https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80\"}, {\"url\": \"https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2a\"}, {\"url\": \"https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4a\"}, {\"url\": \"https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0\"}, {\"url\": \"https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5\"}, {\"url\": \"https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1\"}, {\"url\": \"https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()\\n\\nApply the same fix than ones found in :\\n\\n8d975c15c0cd (\\\"ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()\\\")\\n1ca1ba465e55 (\\\"geneve: make sure to pull inner header in geneve_rx()\\\")\\n\\nWe have to save skb-\u003enetwork_header in a temporary variable\\nin order to be able to recompute the network_header pointer\\nafter a pskb_inet_may_pull() call.\\n\\npskb_inet_may_pull() makes sure the needed headers are in skb-\u003ehead.\\n\\nsyzbot reported:\\nBUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\\n BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\\n BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\\n BUG: KMSAN: uninit-value in ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\\n  __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\\n  INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\\n  IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\\n  ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\\n  __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ip_gre.c:389\\n  ipgre_rcv net/ipv4/ip_gre.c:411 [inline]\\n  gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447\\n  gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163\\n  ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205\\n  ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254\\n  dst_input include/net/dst.h:461 [inline]\\n  ip_rcv_finish net/ipv4/ip_input.c:449 [inline]\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569\\n  __netif_receive_skb_one_core net/core/dev.c:5534 [inline]\\n  __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648\\n  netif_receive_skb_internal net/core/dev.c:5734 [inline]\\n  netif_receive_skb+0x58/0x660 net/core/dev.c:5793\\n  tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1556\\n  tun_get_user+0x53b9/0x66e0 drivers/net/tun.c:2009\\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\\n  call_write_iter include/linux/fs.h:2087 [inline]\\n  new_sync_write fs/read_write.c:497 [inline]\\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\\n  __do_sys_write fs/read_write.c:655 [inline]\\n  __se_sys_write fs/read_write.c:652 [inline]\\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\\n\\nUninit was created at:\\n  __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590\\n  alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133\\n  alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204\\n  skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909\\n  tun_build_skb drivers/net/tun.c:1686 [inline]\\n  tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826\\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\\n  call_write_iter include/linux/fs.h:2087 [inline]\\n  new_sync_write fs/read_write.c:497 [inline]\\n  vfs_write+0xb6b/0x1520 fs/read_write.c:590\\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\\n  __do_sys_write fs/read_write.c:655 [inline]\\n  __se_sys_write fs/read_write.c:652 [inline]\\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.273\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.214\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.153\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.83\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.23\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.11\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.2\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"3.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:28:07.358Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26882\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:28:07.358Z\", \"dateReserved\": \"2024-02-19T14:20:24.185Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-17T10:27:38.389Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.