{
  "cveId": "CVE-2024-26608",
  "url": "https://patchblox.com/security/cve/CVE-2024-26608",
  "summary": "CVE-2024-26608 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-26608, released March 11, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ksmbd: fix global oob in ksmbd_nl_policy  Simila...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ksmbd: fix global oob in ksmbd_nl_policy  Similar to a reported issue (check the commit b33fb5b801c6 (\u0022net: qualcomm: rmnet: fix global oob in rmnet_policy\u0022), my local fuzzer finds another global out-of-bounds read for policy ksmbd_nl_policy. 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\u002B0x24af/0x2750 lib/nlattr.c:600 Read of size 1 at addr ffffffff8f24b100 by task syz-executor.1/62810  CPU: 0 PID: 62810 Comm: syz-executor.1 Tainted: G                 N 6.1.0 #3 Hardware name: QEMU Standard PC (i440FX \u002B PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Call Trace:  \u003CTASK\u003E  __dump_stack lib/dump_stack.c:88 [inline]  dump_stack_lvl\u002B0x8b/0xb3 lib/dump_stack.c:106  print_address_description mm/kasan/report.c:284 [inline]  print_report\u002B0x172/0x475 mm/kasan/report.c:395  kasan_report\u002B0xbb/0x1c0 mm/kasan/report.c:495  validate_nla lib/nlattr.c:386 [inline]  __nla_validate_parse\u002B0x24af/0x2750 lib/nlattr.c:600  __nla_parse\u002B0x3e/0x50 lib/nlattr.c:697  __nlmsg_parse include/net/netlink.h:748 [inline]  genl_family_rcv_msg_attrs_parse.constprop.0\u002B0x1b0/0x290 net/netlink/genetlink.c:565  genl_family_rcv_msg_doit\u002B0xda/0x330 net/netlink/genetlink.c:734  genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]  genl_rcv_msg\u002B0x441/0x780 net/netlink/genetlink.c:850  netlink_rcv_skb\u002B0x14f/0x410 net/netlink/af_netlink.c:2540  genl_rcv\u002B0x24/0x40 net/netlink/genetlink.c:861  netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]  netlink_unicast\u002B0x54e/0x800 net/netlink/af_netlink.c:1345  netlink_sendmsg\u002B0x930/0xe50 net/netlink/af_netlink.c:1921  sock_sendmsg_nosec net/socket.c:714 [inline]  sock_sendmsg\u002B0x154/0x190 net/socket.c:734  ____sys_sendmsg\u002B0x6df/0x840 net/socket.c:2482  ___sys_sendmsg\u002B0x110/0x1b0 net/socket.c:2536  __sys_sendmsg\u002B0xf3/0x1c0 net/socket.c:2565  do_syscall_x64 arch/x86/entry/common.c:50 [inline]  do_syscall_64\u002B0x3b/0x90 arch/x86/entry/common.c:80  entry_SYSCALL_64_after_hwframe\u002B0x63/0xcd RIP: 0033:0x7fdd66a8f359 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003C48\u003E 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdd65e00168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fdd66bbcf80 RCX: 00007fdd66a8f359 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000003 RBP: 00007fdd66ada493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc84b81aff R14: 00007fdd65e00300 R15: 0000000000022000  \u003C/TASK\u003E  The buggy address belongs to the variable:  ksmbd_nl_policy\u002B0x100/0xa80  The buggy address belongs to the physical page: page:0000000034f47940 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ccc4b flags: 0x200000000001000(reserved|node=0|zone=2) raw: 0200000000001000 ffffea00073312c8 ffffea00073312c8 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected  Memory state around the buggy address:  ffffffff8f24b000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ffffffff8f24b080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 \u003Effffffff8f24b100: f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 00 00 07 f9                    ^  ffffffff8f24b180: f9 f9 f9 f9 00 05 f9 f9 f9 f9 f9 f9 00 00 00 05  ffffffff8f24b200: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 04 f9 ==================================================================  To fix it, add a placeholder named __KSMBD_EVENT_MAX and let KSMBD_EVENT_MAX to be its original value - 1 according to what other netlink families do. Also change two sites that refer the KSMBD_EVENT_MAX to correct value.",
  "published": "2024-03-11T18:15:18Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00236,
  "epssPercentile": 0.14667,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.76-1",
      "fix": "DEBIAN-CVE-2024-26608",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-26608",
      "released": "2024-03-11T18:15:18Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.6.15-1",
      "fix": "DEBIAN-CVE-2024-26608",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-26608",
      "released": "2024-03-11T18:15:18Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.6.15-1",
      "fix": "DEBIAN-CVE-2024-26608",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-26608",
      "released": "2024-03-11T18:15:18Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}