net: qualcomm: rmnet: fix global oob in rmnet_policy

{
  "id": "2c5f360a3efecc484c14f4fafc27e17ab2fabb1242f928f6cb51ae3f0340f0cd",
  "url": "https://osv.dev/vulnerability/CVE-2024-26597",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: qualcomm: rmnet: fix global oob in rmnet_policy",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: qualcomm: rmnet: fix global oob in rmnet_policy The variable rmnet_link_ops assign a *bigger* maxtype which leads to a global out-of-bounds read when parsing the netlink attributes. See bug trace below: ================================================================== BUG: KASAN: global-out-of-bounds in validate_nla lib/nlattr.c:386 [inline] BUG: KASAN: global-out-of-bounds in __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600 Read of size 1 at addr ffffffff92c438d0 by task syz-executor.6/84207 CPU: 0 PID: 84207 Comm: syz-executor.6 Tainted: G N 6.1.0 #3 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x172/0x475 mm/kasan/report.c:395 kasan_report+0xbb/0x1c0 mm/kasan/report.c:495 validate_nla lib/nlattr.c:386 [inline] __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600 __nla_parse+0x3e/0x50 lib/nlattr.c:697 nla_parse_nested_deprecated include/net/netlink.h:1248 [inline] __rtnl_newlink+0x50a/0x1880 net/core/rtnetlink.c:3485 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3594 rtnetlink_rcv_msg+0x43c/0xd70 net/core/rtnetlink.c:6091 netlink_rcv_skb+0x14f/0x410 net/netlink/af_netlink.c:2540 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x54e/0x800 net/netlink/af_netlink.c",
    "evidence": "osv:CVE-2024-26597",
    "products": [
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        "prerequisites": [],
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    "severity": "high",
    "structured": {
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      "modified": "2026-10-28T02:30:33.577284064Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/02467ab8b404d80429107588e0f3425cf5fcd2e5",
        "https://git.kernel.org/stable/c/093dab655808207f7a9f54cf156240aeafc70590",
        "https://git.kernel.org/stable/c/17d06a5c44d8fd2e8e61bac295b09153496f87e1",
        "https://git.kernel.org/stable/c/2295c22348faf795e1ccdf618f6eb7afdb2f7447",
        "https://git.kernel.org/stable/c/3b5254862258b595662a0ccca6e9eeb88d6e7468",
        "https://git.kernel.org/stable/c/b33fb5b801c6db408b774a68e7c8722796b59ecc",
        "https://git.kernel.org/stable/c/c4734535034672f59f2652e1e0058c490da62a5c",
        "https://git.kernel.org/stable/c/ee1dc3bf86f2df777038506b139371a9add02534",
        "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html",
        "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26597.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-26597",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
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    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 500285,
  "published_at": "2024-02-23T14:46:26.042+00:00"
}