ipv6: avoid possible NULL deref in rt6_uncached_list_flush_dev()

{
  "id": "d173c3be2bf85f7e400ccef654c5421a5f190362c82cd26650c2ea434881cc97",
  "url": "https://osv.dev/vulnerability/CVE-2024-47707",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ipv6: avoid possible NULL deref in rt6_uncached_list_flush_dev()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ipv6: avoid possible NULL deref in rt6_uncached_list_flush_dev() Blamed commit accidentally removed a check for rt->rt6i_idev being NULL, as spotted by syzbot: Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 UID: 0 PID: 10998 Comm: syz-executor Not tainted 6.11.0-rc6-syzkaller-00208-g625403177711 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:rt6_uncached_list_flush_dev net/ipv6/route.c:177 [inline] RIP: 0010:rt6_disable_ip+0x33e/0x7e0 net/ipv6/route.c:4914 Code: 41 80 3c 04 00 74 0a e8 90 d0 9b f7 48 8b 7c 24 08 48 8b 07 48 89 44 24 10 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 64 d0 9b f7 48 8b 44 24 18 49 39 06 RSP: 0018:ffffc900047374e0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 1ffff1100fdf8f33 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88807efc78c0 RBP: ffffc900047375d0 R08: 0000000000000003 R09: fffff520008e6e8c R10: dffffc0000000000 R11: fffff520008e6e8c R12: 1ffff1100fdf8f18 R13: ffff88807efc7998 R14: 0000000000000000 R15: ffff88807efc7930 FS: 0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002a80 CR3: 0000000022f62000 CR4: 00000000003506f0 ",
    "evidence": "osv:CVE-2024-47707",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.290",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.234",
            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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            "value": "6.6.54",
            "evidence": "/affected/1/ranges"
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          {
            "value": "6.10.13",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.11.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-47707",
      "aliases": [
        "CVE-2024-47707"
      ],
      "affected": [
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                  "fixed": "9a0ddc73be37d19dff1ba08290af34e707d18e50"
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                  "fixed": "08409e401622e2896b4313be9f781bde8a2a6a53"
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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          "versions": [
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            "v4.2.7",
            "v4.2.6",
            "v4.2.5"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-47707.json"
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            "ecosystem": "Linux"
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      ],
      "modified": "2026-10-28T02:30:49.816272718Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-265688.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
        "https://git.kernel.org/stable/c/04ccecfa959d3b9ae7348780d8e379c6486176ac",
        "https://git.kernel.org/stable/c/08409e401622e2896b4313be9f781bde8a2a6a53",
        "https://git.kernel.org/stable/c/0ceb2f2b5c813f932d6e60d3feec5e7e713da783",
        "https://git.kernel.org/stable/c/8a8b83016f06805775db099c8377024b6fa5b975",
        "https://git.kernel.org/stable/c/9a0ddc73be37d19dff1ba08290af34e707d18e50",
        "https://git.kernel.org/stable/c/a61a174280dad99f25a7dee920310885daf2552b",
        "https://git.kernel.org/stable/c/e43dd28405e6b9935279996725ee11e6306547a5",
        "https://git.kernel.org/stable/c/f2bd9635543ca41533b870f420872819f8331823",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/47xxx/CVE-2024-47707.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-47707",
        "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/2024/47xxx/CVE-2024-47707.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-47707",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518184,
  "published_at": "2024-10-21T11:53:41.417+00:00"
}