seg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors

{
  "id": "bd32ff00d40d5fc9693da5bfd1bdc0934b33d32e51e370f4c1d9b4ad929e41aa",
  "url": "https://osv.dev/vulnerability/CVE-2024-40957",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "seg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: seg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors input_action_end_dx4() and input_action_end_dx6() are called NF_HOOK() for PREROUTING hook, in PREROUTING hook, we should passing a valid indev, and a NULL outdev to NF_HOOK(), otherwise may trigger a NULL pointer dereference, as below: [74830.647293] BUG: kernel NULL pointer dereference, address: 0000000000000090 [74830.655633] #PF: supervisor read access in kernel mode [74830.657888] #PF: error_code(0x0000) - not-present page [74830.659500] PGD 0 P4D 0 [74830.660450] Oops: 0000 [#1] PREEMPT SMP PTI ... [74830.664953] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 [74830.666569] RIP: 0010:rpfilter_mt+0x44/0x15e [ipt_rpfilter] ... [74830.689725] Call Trace: [74830.690402] [74830.690953] ? show_trace_log_lvl+0x1c4/0x2df [74830.692020] ? show_trace_log_lvl+0x1c4/0x2df [74830.693095] ? ipt_do_table+0x286/0x710 [ip_tables] [74830.694275] ? __die_body.cold+0x8/0xd [74830.695205] ? page_fault_oops+0xac/0x140 [74830.696244] ? exc_page_fault+0x62/0x150 [74830.697225] ? asm_exc_page_fault+0x22/0x30 [74830.698344] ? rpfilter_mt+0x44/0x15e [ipt_rpfilter] [74830.699540] ipt_do_table+0x286/0x710 [ip_tables] [74830.700758] ? ip6_route_input+0x19d/0x240 [74830.701752] nf_hook_slow+0x3f/0xb0 [74830.702678] input_action_end_dx4+0x19b/0x1e0 [74830.703735] ? input_action_end_t+0xe0/0xe0 [74830.704734] seg6_local_input_core+0x2d/0x60 [74830.70",
    "evidence": "osv:CVE-2024-40957",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.162",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.96",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.36",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.9.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-40957",
      "aliases": [
        "CVE-2024-40957"
      ],
      "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": "7a3f5b0de3647c854e34269c3332d7a1e902901a"
                },
                {
                  "fixed": "af90e3d73dc45778767b2fb6e7edd57ebe34380d"
                },
                {
                  "fixed": "ec4d970b597ee5e17b0d8d73b7875197ce9a04d4"
                },
                {
                  "fixed": "d62df86c172033679d744f07d89e93e367dd11f6"
                },
                {
                  "fixed": "561475d53aa7e4511ee7cdba8728ded81cf1db1c"
                },
                {
                  "fixed": "9a3bc8d16e0aacd65c31aaf23a2bced3288a7779"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-40957.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.15.0"
                },
                {
                  "fixed": "5.15.162"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.96"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.36"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.9.7"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-40957.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:35.317370673Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/561475d53aa7e4511ee7cdba8728ded81cf1db1c",
        "https://git.kernel.org/stable/c/9a3bc8d16e0aacd65c31aaf23a2bced3288a7779",
        "https://git.kernel.org/stable/c/af90e3d73dc45778767b2fb6e7edd57ebe34380d",
        "https://git.kernel.org/stable/c/d62df86c172033679d744f07d89e93e367dd11f6",
        "https://git.kernel.org/stable/c/ec4d970b597ee5e17b0d8d73b7875197ce9a04d4",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/40xxx/CVE-2024-40957.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-40957",
        "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/2024/40xxx/CVE-2024-40957.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-40957",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 502173,
  "published_at": "2024-07-12T12:31:59.747+00:00"
}