ipmr: fix kernel panic when forwarding mcast packets

{
  "id": "d980597c5018f5d78598b445790f6ed8b684c3a7b2f2fc93798c94d64c9830cf",
  "url": "https://osv.dev/vulnerability/CVE-2024-26626",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ipmr: fix kernel panic when forwarding mcast packets",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ipmr: fix kernel panic when forwarding mcast packets The stacktrace was: [ 86.305548] BUG: kernel NULL pointer dereference, address: 0000000000000092 [ 86.306815] #PF: supervisor read access in kernel mode [ 86.307717] #PF: error_code(0x0000) - not-present page [ 86.308624] PGD 0 P4D 0 [ 86.309091] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 86.309883] CPU: 2 PID: 3139 Comm: pimd Tainted: G U 6.8.0-6wind-knet #1 [ 86.311027] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.1-0-g0551a4be2c-prebuilt.qemu-project.org 04/01/2014 [ 86.312728] RIP: 0010:ip_mr_forward (/build/work/knet/net/ipv4/ipmr.c:1985) [ 86.313399] Code: f9 1f 0f 87 85 03 00 00 48 8d 04 5b 48 8d 04 83 49 8d 44 c5 00 48 8b 40 70 48 39 c2 0f 84 d9 00 00 00 49 8b 46 58 48 83 e0 fe <80> b8 92 00 00 00 00 0f 84 55 ff ff ff 49 83 47 38 01 45 85 e4 0f [ 86.316565] RSP: 0018:ffffad21c0583ae0 EFLAGS: 00010246 [ 86.317497] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 86.318596] RDX: ffff9559cb46c000 RSI: 0000000000000000 RDI: 0000000000000000 [ 86.319627] RBP: ffffad21c0583b30 R08: 0000000000000000 R09: 0000000000000000 [ 86.320650] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 86.321672] R13: ffff9559c093a000 R14: ffff9559cc00b800 R15: ffff9559c09c1d80 [ 86.322873] FS: 00007f85db661980(0000) GS:ffff955a79d00000(0000) knlGS:0000000000000000 [ 86.324291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050",
    "evidence": "osv:CVE-2024-26626",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.77",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.7.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-26626",
      "aliases": [
        "CVE-2024-26626"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "f69365e3a7cab819099249c50b39f4450fdddc60"
                },
                {
                  "fixed": "d2f1b7fe74afd66298dbb3c7b39e7b62e4df1724"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7b32e63f881432bf30f282328b8e64c6aa494ba2"
                },
                {
                  "fixed": "dcaafdba6c6162bb49f1192850bc3bbc3707738c"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7d97858e21fbc472acda7d908357c5fe54a8e439"
                },
                {
                  "fixed": "2e8c9ae40adda2be1ba41c05fd3cd1e61cce3207"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "bb7403655b3c3eb245d0ee330047cd3e20b3c4af"
                },
                {
                  "fixed": "e622502c310f1069fd9f41cd38210553115f610a"
                }
              ]
            }
          ],
          "versions": [
            "v6.1.76",
            "v6.1.75",
            "v6.6.15",
            "v6.6.14",
            "v6.7.3",
            "v6.7.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26626.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.1.75"
                },
                {
                  "fixed": "6.1.77"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.6.14"
                },
                {
                  "fixed": "6.6.16"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.2"
                },
                {
                  "fixed": "6.7.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26626.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:21.352862712Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/2e8c9ae40adda2be1ba41c05fd3cd1e61cce3207",
        "https://git.kernel.org/stable/c/d2f1b7fe74afd66298dbb3c7b39e7b62e4df1724",
        "https://git.kernel.org/stable/c/dcaafdba6c6162bb49f1192850bc3bbc3707738c",
        "https://git.kernel.org/stable/c/e622502c310f1069fd9f41cd38210553115f610a",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26626.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-26626",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26626.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-26626",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 487032,
  "published_at": "2024-03-06T06:45:33.826+00:00"
}