{
  "cveId": "CVE-2022-49779",
  "url": "https://patchblox.com/security/cve/CVE-2022-49779",
  "summary": "CVE-2022-49779 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49779, released May 1, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  kprobes: Skip clearing aggrprobe\u0027s post_handler...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  kprobes: Skip clearing aggrprobe\u0027s post_handler in kprobe-on-ftrace case  In __unregister_kprobe_top(), if the currently unregistered probe has post_handler but other child probes of the aggrprobe do not have post_handler, the post_handler of the aggrprobe is cleared. If this is a ftrace-based probe, there is a problem. In later calls to disarm_kprobe(), we will use kprobe_ftrace_ops because post_handler is NULL. But we\u0027re armed with kprobe_ipmodify_ops. This triggers a WARN in __disarm_kprobe_ftrace() and may even cause use-after-free:    Failed to disarm kprobe-ftrace at kernel_clone\u002B0x0/0x3c0 (error -2)   WARNING: CPU: 5 PID: 137 at kernel/kprobes.c:1135 __disarm_kprobe_ftrace.isra.21\u002B0xcf/0xe0   Modules linked in: testKprobe_007(-)   CPU: 5 PID: 137 Comm: rmmod Not tainted 6.1.0-rc4-dirty #18   [...]   Call Trace:    \u003CTASK\u003E    __disable_kprobe\u002B0xcd/0xe0    __unregister_kprobe_top\u002B0x12/0x150    ? mutex_lock\u002B0xe/0x30    unregister_kprobes.part.23\u002B0x31/0xa0    unregister_kprobe\u002B0x32/0x40    __x64_sys_delete_module\u002B0x15e/0x260    ? do_user_addr_fault\u002B0x2cd/0x6b0    do_syscall_64\u002B0x3a/0x90    entry_SYSCALL_64_after_hwframe\u002B0x63/0xcd    [...]  For the kprobe-on-ftrace case, we keep the post_handler setting to identify this aggrprobe armed with kprobe_ipmodify_ops. This way we can disarm it correctly.",
  "published": "2025-05-01T15:16:01Z",
  "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": 0.0022,
  "epssPercentile": 0.12651,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.0.10-1",
      "fix": "DEBIAN-CVE-2022-49779",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49779",
      "released": "2025-05-01T15:16:01Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.0.10-1",
      "fix": "DEBIAN-CVE-2022-49779",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49779",
      "released": "2025-05-01T15:16:01Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.0.10-1",
      "fix": "DEBIAN-CVE-2022-49779",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49779",
      "released": "2025-05-01T15:16:01Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}