CVE-2023-53365 (GCVE-0-2023-53365)
Vulnerability from cvelistv5
Published
2025-09-17 14:56
Modified
2025-09-17 14:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ip6mr: Fix skb_under_panic in ip6mr_cache_report() skbuff: skb_under_panic: text:ffffffff88771f69 len:56 put:-4 head:ffff88805f86a800 data:ffff887f5f86a850 tail:0x88 end:0x2c0 dev:pim6reg ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:192! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 2 PID: 22968 Comm: kworker/2:11 Not tainted 6.5.0-rc3-00044-g0a8db05b571a #236 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Workqueue: ipv6_addrconf addrconf_dad_work RIP: 0010:skb_panic+0x152/0x1d0 Call Trace: <TASK> skb_push+0xc4/0xe0 ip6mr_cache_report+0xd69/0x19b0 reg_vif_xmit+0x406/0x690 dev_hard_start_xmit+0x17e/0x6e0 __dev_queue_xmit+0x2d6a/0x3d20 vlan_dev_hard_start_xmit+0x3ab/0x5c0 dev_hard_start_xmit+0x17e/0x6e0 __dev_queue_xmit+0x2d6a/0x3d20 neigh_connected_output+0x3ed/0x570 ip6_finish_output2+0x5b5/0x1950 ip6_finish_output+0x693/0x11c0 ip6_output+0x24b/0x880 NF_HOOK.constprop.0+0xfd/0x530 ndisc_send_skb+0x9db/0x1400 ndisc_send_rs+0x12a/0x6c0 addrconf_dad_completed+0x3c9/0xea0 addrconf_dad_work+0x849/0x1420 process_one_work+0xa22/0x16e0 worker_thread+0x679/0x10c0 ret_from_fork+0x28/0x60 ret_from_fork_asm+0x11/0x20 When setup a vlan device on dev pim6reg, DAD ns packet may sent on reg_vif_xmit(). reg_vif_xmit() ip6mr_cache_report() skb_push(skb, -skb_network_offset(pkt));//skb_network_offset(pkt) is 4 And skb_push declared as: void *skb_push(struct sk_buff *skb, unsigned int len); skb->data -= len; //0xffff88805f86a84c - 0xfffffffc = 0xffff887f5f86a850 skb->data is set to 0xffff887f5f86a850, which is invalid mem addr, lead to skb_push() fails.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0438e60a00d4e335b3c36397dbf26c74b5d13ef0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1683124129a4263dd5bce2475bab110e95fa0346
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1bb54a21f4d9b88442f8c3307c780e2db64417e4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/30e0191b16e8a58e4620fa3e2839ddc7b9d4281c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3326c711f18d18fe6e1f5d83d3a7eab07e5a1560
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/691a09eecad97e745b9aa0e3918db46d020bdacb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8382e7ed2d63e6c2daf6881fa091526dc6c879cd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a96d74d1076c82a4cef02c150d9996b21354c78d
Impacted products
Vendor Product Version
Linux Linux Version: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d
Version: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d
Version: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d
Version: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d
Version: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d
Version: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d
Version: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d
Version: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d
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   Linux Linux Version: 2.6.26
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{
  "containers": {
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        {
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          "product": "Linux",
          "programFiles": [
            "net/ipv6/ip6mr.c"
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          "programFiles": [
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          "vendor": "Linux",
          "versions": [
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            },
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "4.19.291",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.4.253",
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              "status": "unaffected",
              "version": "5.10.190",
              "versionType": "semver"
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              "version": "5.15.126",
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              "version": "6.4.10",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
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              ],
              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nip6mr: Fix skb_under_panic in ip6mr_cache_report()\n\nskbuff: skb_under_panic: text:ffffffff88771f69 len:56 put:-4\n head:ffff88805f86a800 data:ffff887f5f86a850 tail:0x88 end:0x2c0 dev:pim6reg\n ------------[ cut here ]------------\n kernel BUG at net/core/skbuff.c:192!\n invalid opcode: 0000 [#1] PREEMPT SMP KASAN\n CPU: 2 PID: 22968 Comm: kworker/2:11 Not tainted 6.5.0-rc3-00044-g0a8db05b571a #236\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n Workqueue: ipv6_addrconf addrconf_dad_work\n RIP: 0010:skb_panic+0x152/0x1d0\n Call Trace:\n  \u003cTASK\u003e\n  skb_push+0xc4/0xe0\n  ip6mr_cache_report+0xd69/0x19b0\n  reg_vif_xmit+0x406/0x690\n  dev_hard_start_xmit+0x17e/0x6e0\n  __dev_queue_xmit+0x2d6a/0x3d20\n  vlan_dev_hard_start_xmit+0x3ab/0x5c0\n  dev_hard_start_xmit+0x17e/0x6e0\n  __dev_queue_xmit+0x2d6a/0x3d20\n  neigh_connected_output+0x3ed/0x570\n  ip6_finish_output2+0x5b5/0x1950\n  ip6_finish_output+0x693/0x11c0\n  ip6_output+0x24b/0x880\n  NF_HOOK.constprop.0+0xfd/0x530\n  ndisc_send_skb+0x9db/0x1400\n  ndisc_send_rs+0x12a/0x6c0\n  addrconf_dad_completed+0x3c9/0xea0\n  addrconf_dad_work+0x849/0x1420\n  process_one_work+0xa22/0x16e0\n  worker_thread+0x679/0x10c0\n  ret_from_fork+0x28/0x60\n  ret_from_fork_asm+0x11/0x20\n\nWhen setup a vlan device on dev pim6reg, DAD ns packet may sent on reg_vif_xmit().\nreg_vif_xmit()\n    ip6mr_cache_report()\n        skb_push(skb, -skb_network_offset(pkt));//skb_network_offset(pkt) is 4\nAnd skb_push declared as:\n\tvoid *skb_push(struct sk_buff *skb, unsigned int len);\n\t\tskb-\u003edata -= len;\n\t\t//0xffff88805f86a84c - 0xfffffffc = 0xffff887f5f86a850\nskb-\u003edata is set to 0xffff887f5f86a850, which is invalid mem addr, lead to skb_push() fails."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-17T14:56:53.781Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a96d74d1076c82a4cef02c150d9996b21354c78d"
        },
        {
          "url": "https://git.kernel.org/stable/c/8382e7ed2d63e6c2daf6881fa091526dc6c879cd"
        },
        {
          "url": "https://git.kernel.org/stable/c/0438e60a00d4e335b3c36397dbf26c74b5d13ef0"
        },
        {
          "url": "https://git.kernel.org/stable/c/1683124129a4263dd5bce2475bab110e95fa0346"
        },
        {
          "url": "https://git.kernel.org/stable/c/1bb54a21f4d9b88442f8c3307c780e2db64417e4"
        },
        {
          "url": "https://git.kernel.org/stable/c/691a09eecad97e745b9aa0e3918db46d020bdacb"
        },
        {
          "url": "https://git.kernel.org/stable/c/3326c711f18d18fe6e1f5d83d3a7eab07e5a1560"
        },
        {
          "url": "https://git.kernel.org/stable/c/30e0191b16e8a58e4620fa3e2839ddc7b9d4281c"
        }
      ],
      "title": "ip6mr: Fix skb_under_panic in ip6mr_cache_report()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53365",
    "datePublished": "2025-09-17T14:56:53.781Z",
    "dateReserved": "2025-09-17T14:54:09.733Z",
    "dateUpdated": "2025-09-17T14:56:53.781Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53365\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-17T15:15:40.803\",\"lastModified\":\"2025-09-18T13:43:34.310\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nip6mr: Fix skb_under_panic in ip6mr_cache_report()\\n\\nskbuff: skb_under_panic: text:ffffffff88771f69 len:56 put:-4\\n head:ffff88805f86a800 data:ffff887f5f86a850 tail:0x88 end:0x2c0 dev:pim6reg\\n ------------[ cut here ]------------\\n kernel BUG at net/core/skbuff.c:192!\\n invalid opcode: 0000 [#1] PREEMPT SMP KASAN\\n CPU: 2 PID: 22968 Comm: kworker/2:11 Not tainted 6.5.0-rc3-00044-g0a8db05b571a #236\\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\\n Workqueue: ipv6_addrconf addrconf_dad_work\\n RIP: 0010:skb_panic+0x152/0x1d0\\n Call Trace:\\n  \u003cTASK\u003e\\n  skb_push+0xc4/0xe0\\n  ip6mr_cache_report+0xd69/0x19b0\\n  reg_vif_xmit+0x406/0x690\\n  dev_hard_start_xmit+0x17e/0x6e0\\n  __dev_queue_xmit+0x2d6a/0x3d20\\n  vlan_dev_hard_start_xmit+0x3ab/0x5c0\\n  dev_hard_start_xmit+0x17e/0x6e0\\n  __dev_queue_xmit+0x2d6a/0x3d20\\n  neigh_connected_output+0x3ed/0x570\\n  ip6_finish_output2+0x5b5/0x1950\\n  ip6_finish_output+0x693/0x11c0\\n  ip6_output+0x24b/0x880\\n  NF_HOOK.constprop.0+0xfd/0x530\\n  ndisc_send_skb+0x9db/0x1400\\n  ndisc_send_rs+0x12a/0x6c0\\n  addrconf_dad_completed+0x3c9/0xea0\\n  addrconf_dad_work+0x849/0x1420\\n  process_one_work+0xa22/0x16e0\\n  worker_thread+0x679/0x10c0\\n  ret_from_fork+0x28/0x60\\n  ret_from_fork_asm+0x11/0x20\\n\\nWhen setup a vlan device on dev pim6reg, DAD ns packet may sent on reg_vif_xmit().\\nreg_vif_xmit()\\n    ip6mr_cache_report()\\n        skb_push(skb, -skb_network_offset(pkt));//skb_network_offset(pkt) is 4\\nAnd skb_push declared as:\\n\\tvoid *skb_push(struct sk_buff *skb, unsigned int len);\\n\\t\\tskb-\u003edata -= len;\\n\\t\\t//0xffff88805f86a84c - 0xfffffffc = 0xffff887f5f86a850\\nskb-\u003edata is set to 0xffff887f5f86a850, which is invalid mem addr, lead to skb_push() fails.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0438e60a00d4e335b3c36397dbf26c74b5d13ef0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1683124129a4263dd5bce2475bab110e95fa0346\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1bb54a21f4d9b88442f8c3307c780e2db64417e4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/30e0191b16e8a58e4620fa3e2839ddc7b9d4281c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3326c711f18d18fe6e1f5d83d3a7eab07e5a1560\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/691a09eecad97e745b9aa0e3918db46d020bdacb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8382e7ed2d63e6c2daf6881fa091526dc6c879cd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a96d74d1076c82a4cef02c150d9996b21354c78d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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