{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-26611",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-03-12T15:51:58.971501Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:49:27.696Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T00:07:19.862Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/82ee4781b8200e44669a354140d5c6bd966b8768"
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              "x_transferred"
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            "url": "https://git.kernel.org/stable/c/5cd781f7216f980207af09c5e0e1bb1eda284540"
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          {
            "tags": [
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            ],
            "url": "https://git.kernel.org/stable/c/c5114710c8ce86b8317e9b448f4fd15c711c2a82"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/xdp_sock_drv.h",
            "net/core/filter.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "82ee4781b8200e44669a354140d5c6bd966b8768",
              "status": "affected",
              "version": "24ea50127ecf0efe819c1f6230add27abc6ca9d9",
              "versionType": "git"
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              "status": "affected",
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/xdp_sock_drv.h",
            "net/core/filter.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.15",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.8",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.15",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.7.3",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: fix usage of multi-buffer BPF helpers for ZC XDP\n\nCurrently when packet is shrunk via bpf_xdp_adjust_tail() and memory\ntype is set to MEM_TYPE_XSK_BUFF_POOL, null ptr dereference happens:\n\n[1136314.192256] BUG: kernel NULL pointer dereference, address:\n0000000000000034\n[1136314.203943] #PF: supervisor read access in kernel mode\n[1136314.213768] #PF: error_code(0x0000) - not-present page\n[1136314.223550] PGD 0 P4D 0\n[1136314.230684] Oops: 0000 [#1] PREEMPT SMP NOPTI\n[1136314.239621] CPU: 8 PID: 54203 Comm: xdpsock Not tainted 6.6.0+ #257\n[1136314.250469] Hardware name: Intel Corporation S2600WFT/S2600WFT,\nBIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019\n[1136314.265615] RIP: 0010:__xdp_return+0x6c/0x210\n[1136314.274653] Code: ad 00 48 8b 47 08 49 89 f8 a8 01 0f 85 9b 01 00 00 0f 1f 44 00 00 f0 41 ff 48 34 75 32 4c 89 c7 e9 79 cd 80 ff 83 fe 03 75 17 \u003cf6\u003e 41 34 01 0f 85 02 01 00 00 48 89 cf e9 22 cc 1e 00 e9 3d d2 86\n[1136314.302907] RSP: 0018:ffffc900089f8db0 EFLAGS: 00010246\n[1136314.312967] RAX: ffffc9003168aed0 RBX: ffff8881c3300000 RCX:\n0000000000000000\n[1136314.324953] RDX: 0000000000000000 RSI: 0000000000000003 RDI:\nffffc9003168c000\n[1136314.336929] RBP: 0000000000000ae0 R08: 0000000000000002 R09:\n0000000000010000\n[1136314.348844] R10: ffffc9000e495000 R11: 0000000000000040 R12:\n0000000000000001\n[1136314.360706] R13: 0000000000000524 R14: ffffc9003168aec0 R15:\n0000000000000001\n[1136314.373298] FS:  00007f8df8bbcb80(0000) GS:ffff8897e0e00000(0000)\nknlGS:0000000000000000\n[1136314.386105] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[1136314.396532] CR2: 0000000000000034 CR3: 00000001aa912002 CR4:\n00000000007706f0\n[1136314.408377] DR0: 0000000000000000 DR1: 0000000000000000 DR2:\n0000000000000000\n[1136314.420173] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:\n0000000000000400\n[1136314.431890] PKRU: 55555554\n[1136314.439143] Call Trace:\n[1136314.446058]  \u003cIRQ\u003e\n[1136314.452465]  ? __die+0x20/0x70\n[1136314.459881]  ? page_fault_oops+0x15b/0x440\n[1136314.468305]  ? exc_page_fault+0x6a/0x150\n[1136314.476491]  ? asm_exc_page_fault+0x22/0x30\n[1136314.484927]  ? __xdp_return+0x6c/0x210\n[1136314.492863]  bpf_xdp_adjust_tail+0x155/0x1d0\n[1136314.501269]  bpf_prog_ccc47ae29d3b6570_xdp_sock_prog+0x15/0x60\n[1136314.511263]  ice_clean_rx_irq_zc+0x206/0xc60 [ice]\n[1136314.520222]  ? ice_xmit_zc+0x6e/0x150 [ice]\n[1136314.528506]  ice_napi_poll+0x467/0x670 [ice]\n[1136314.536858]  ? ttwu_do_activate.constprop.0+0x8f/0x1a0\n[1136314.546010]  __napi_poll+0x29/0x1b0\n[1136314.553462]  net_rx_action+0x133/0x270\n[1136314.561619]  __do_softirq+0xbe/0x28e\n[1136314.569303]  do_softirq+0x3f/0x60\n\nThis comes from __xdp_return() call with xdp_buff argument passed as\nNULL which is supposed to be consumed by xsk_buff_free() call.\n\nTo address this properly, in ZC case, a node that represents the frag\nbeing removed has to be pulled out of xskb_list. Introduce\nappropriate xsk helpers to do such node operation and use them\naccordingly within bpf_xdp_adjust_tail()."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The bug is triggered while processing a frame received from the wire in the driver\u0027s NAPI/XDP path \u2014 the attacker only needs to send a packet whose length exceeds the XSK chunk\u0027s usable size so the xdp_buff becomes multi-buffer. Such frames traverse routed paths (jumbo-enabled datacenter/cloud fabrics), and with a non-zero umem headroom even ordinary 1514-byte frames split into fragments, so no L2 adjacency is required.\nAC:L - There is no race and no memory-layout dependency; against a host running an AF_XDP zero-copy application whose XDP program shrinks the packet tail, the attacker picks the frame length so the trailing fragment is fully trimmed and gets a deterministic, repeatable NULL dereference. Sweeping a range of packet sizes is trivially automatable.\nPR:N - The vulnerable code runs in the NIC receive softirq before any protocol processing or authentication, so an unauthenticated remote sender needs no credentials or account on the target.\nUI:N - No victim action is needed at attack time; the AF_XDP zero-copy configuration and attached XDP program are pre-existing deployment state, and the crash occurs automatically on packet receipt.\nS:U - The fault occurs in kernel context and its impact is confined to the same kernel security authority \u2014 no VM, container, or IOMMU boundary is crossed.\nC:N - The defect is a read of a fixed NULL+0x34 address, not an attacker-controlled or out-of-bounds read, and it faults before any data is returned, so no kernel memory is disclosed.\nI:N - No write occurs on the faulting path \u2014 xsk_buff_free() dereferences the NULL xdp_buff before touching any pool state \u2014 and mmap_min_addr prevents mapping page zero to convert this into a write primitive.\nA:H - The NULL dereference oopses inside net_rx_action softirq context, killing the NAPI poll and wedging the receive queue, and panics outright on the many deployments running panic_on_oops; it can be re-triggered with every crafted packet."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:26:15.075Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/82ee4781b8200e44669a354140d5c6bd966b8768"
        },
        {
          "url": "https://git.kernel.org/stable/c/5cd781f7216f980207af09c5e0e1bb1eda284540"
        },
        {
          "url": "https://git.kernel.org/stable/c/c5114710c8ce86b8317e9b448f4fd15c711c2a82"
        }
      ],
      "title": "xsk: fix usage of multi-buffer BPF helpers for ZC XDP",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26611",
    "datePublished": "2024-02-29T15:52:16.405Z",
    "dateReserved": "2024-02-19T14:20:24.130Z",
    "dateUpdated": "2026-08-05T11:26:15.075Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}