{
  "cveId": "CVE-2022-48906",
  "url": "https://patchblox.com/security/cve/CVE-2022-48906",
  "summary": "CVE-2022-48906 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48906, released August 22, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mptcp: Correctly set DATA_FIN timeout when numbe...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mptcp: Correctly set DATA_FIN timeout when number of retransmits is large  Syzkaller with UBSAN uncovered a scenario where a large number of DATA_FIN retransmits caused a shift-out-of-bounds in the DATA_FIN timeout calculation:  ================================================================================ UBSAN: shift-out-of-bounds in net/mptcp/protocol.c:470:29 shift exponent 32 is too large for 32-bit type \u0027unsigned int\u0027 CPU: 1 PID: 13059 Comm: kworker/1:0 Not tainted 5.17.0-rc2-00630-g5fbf21c90c60 #1 Hardware name: QEMU Standard PC (i440FX \u002B PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Workqueue: events mptcp_worker Call Trace:  \u003CTASK\u003E  __dump_stack lib/dump_stack.c:88 [inline]  dump_stack_lvl\u002B0xcd/0x134 lib/dump_stack.c:106  ubsan_epilogue\u002B0xb/0x5a lib/ubsan.c:151  __ubsan_handle_shift_out_of_bounds.cold\u002B0xb2/0x20e lib/ubsan.c:330  mptcp_set_datafin_timeout net/mptcp/protocol.c:470 [inline]  __mptcp_retrans.cold\u002B0x72/0x77 net/mptcp/protocol.c:2445  mptcp_worker\u002B0x58a/0xa70 net/mptcp/protocol.c:2528  process_one_work\u002B0x9df/0x16d0 kernel/workqueue.c:2307  worker_thread\u002B0x95/0xe10 kernel/workqueue.c:2454  kthread\u002B0x2f4/0x3b0 kernel/kthread.c:377  ret_from_fork\u002B0x1f/0x30 arch/x86/entry/entry_64.S:295  \u003C/TASK\u003E ================================================================================  This change limits the maximum timeout by limiting the size of the shift, which keeps all intermediate values in-bounds.",
  "published": "2024-08-22T02:15:05Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00207,
  "epssPercentile": 0.10837,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.16.14-1",
      "fix": "DEBIAN-CVE-2022-48906",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48906",
      "released": "2024-08-22T02:15:05Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.16.14-1",
      "fix": "DEBIAN-CVE-2022-48906",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48906",
      "released": "2024-08-22T02:15:05Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.16.14-1",
      "fix": "DEBIAN-CVE-2022-48906",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48906",
      "released": "2024-08-22T02:15:05Z"
    }
  ],
  "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"
  }
}