{
  "cveId": "CVE-2022-50697",
  "url": "https://patchblox.com/security/cve/CVE-2022-50697",
  "summary": "CVE-2022-50697 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50697, released December 24, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mrp: introduce active flags to prevent UAF when...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mrp: introduce active flags to prevent UAF when applicant uninit  The caller of del_timer_sync must prevent restarting of the timer, If we have no this synchronization, there is a small probability that the cancellation will not be successful.  And syzbot report the fellowing crash: ================================================================== BUG: KASAN: use-after-free in hlist_add_head include/linux/list.h:929 [inline] BUG: KASAN: use-after-free in enqueue_timer\u002B0x18/0xa4 kernel/time/timer.c:605 Write at addr f9ff000024df6058 by task syz-fuzzer/2256 Pointer tag: [f9], memory tag: [fe]  CPU: 1 PID: 2256 Comm: syz-fuzzer Not tainted 6.1.0-rc5-syzkaller-00008- ge01d50cbd6ee #0 Hardware name: linux,dummy-virt (DT) Call trace:  dump_backtrace.part.0\u002B0xe0/0xf0 arch/arm64/kernel/stacktrace.c:156  dump_backtrace arch/arm64/kernel/stacktrace.c:162 [inline]  show_stack\u002B0x18/0x40 arch/arm64/kernel/stacktrace.c:163  __dump_stack lib/dump_stack.c:88 [inline]  dump_stack_lvl\u002B0x68/0x84 lib/dump_stack.c:106  print_address_description mm/kasan/report.c:284 [inline]  print_report\u002B0x1a8/0x4a0 mm/kasan/report.c:395  kasan_report\u002B0x94/0xb4 mm/kasan/report.c:495  __do_kernel_fault\u002B0x164/0x1e0 arch/arm64/mm/fault.c:320  do_bad_area arch/arm64/mm/fault.c:473 [inline]  do_tag_check_fault\u002B0x78/0x8c arch/arm64/mm/fault.c:749  do_mem_abort\u002B0x44/0x94 arch/arm64/mm/fault.c:825  el1_abort\u002B0x40/0x60 arch/arm64/kernel/entry-common.c:367  el1h_64_sync_handler\u002B0xd8/0xe4 arch/arm64/kernel/entry-common.c:427  el1h_64_sync\u002B0x64/0x68 arch/arm64/kernel/entry.S:576  hlist_add_head include/linux/list.h:929 [inline]  enqueue_timer\u002B0x18/0xa4 kernel/time/timer.c:605  mod_timer\u002B0x14/0x20 kernel/time/timer.c:1161  mrp_periodic_timer_arm net/802/mrp.c:614 [inline]  mrp_periodic_timer\u002B0xa0/0xc0 net/802/mrp.c:627  call_timer_fn.constprop.0\u002B0x24/0x80 kernel/time/timer.c:1474  expire_timers\u002B0x98/0xc4 kernel/time/timer.c:1519  To fix it, we can introduce a new active flags to make sure the timer will not restart.",
  "published": "2025-12-24T11:15:48Z",
  "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": 0.00158,
  "epssPercentile": 0.04934,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50697",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50697",
      "released": "2025-12-24T11:15:48Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50697",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50697",
      "released": "2025-12-24T11:15:48Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50697",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50697",
      "released": "2025-12-24T11:15:48Z"
    }
  ],
  "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"
  }
}