{
  "cveId": "CVE-2022-49018",
  "url": "https://patchblox.com/security/cve/CVE-2022-49018",
  "summary": "CVE-2022-49018 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49018, released October 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mptcp: fix sleep in atomic at close time  Matt r...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mptcp: fix sleep in atomic at close time  Matt reported a splat at msk close time:      BUG: sleeping function called from invalid context at net/mptcp/protocol.c:2877     in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 155, name: packetdrill     preempt_count: 201, expected: 0     RCU nest depth: 0, expected: 0     4 locks held by packetdrill/155:     #0: ffff888001536990 (\u0026sb-\u003Es_type-\u003Ei_mutex_key#6){\u002B.\u002B.}-{3:3}, at: __sock_release (net/socket.c:650)     #1: ffff88800b498130 (sk_lock-AF_INET){\u002B.\u002B.}-{0:0}, at: mptcp_close (net/mptcp/protocol.c:2973)     #2: ffff88800b49a130 (sk_lock-AF_INET/1){\u002B.\u002B.}-{0:0}, at: __mptcp_close_ssk (net/mptcp/protocol.c:2363)     #3: ffff88800b49a0b0 (slock-AF_INET){\u002B...}-{2:2}, at: __lock_sock_fast (include/net/sock.h:1820)     Preemption disabled at:     0x0     CPU: 1 PID: 155 Comm: packetdrill Not tainted 6.1.0-rc5 #365     Hardware name: QEMU Standard PC (i440FX \u002B PIIX, 1996), BIOS 1.15.0-1 04/01/2014     Call Trace:     \u003CTASK\u003E     dump_stack_lvl (lib/dump_stack.c:107 (discriminator 4))     __might_resched.cold (kernel/sched/core.c:9891)     __mptcp_destroy_sock (include/linux/kernel.h:110)     __mptcp_close (net/mptcp/protocol.c:2959)     mptcp_subflow_queue_clean (include/net/sock.h:1777)     __mptcp_close_ssk (net/mptcp/protocol.c:2363)     mptcp_destroy_common (net/mptcp/protocol.c:3170)     mptcp_destroy (include/net/sock.h:1495)     __mptcp_destroy_sock (net/mptcp/protocol.c:2886)     __mptcp_close (net/mptcp/protocol.c:2959)     mptcp_close (net/mptcp/protocol.c:2974)     inet_release (net/ipv4/af_inet.c:432)     __sock_release (net/socket.c:651)     sock_close (net/socket.c:1367)     __fput (fs/file_table.c:320)     task_work_run (kernel/task_work.c:181 (discriminator 1))     exit_to_user_mode_prepare (include/linux/resume_user_mode.h:49)     syscall_exit_to_user_mode (kernel/entry/common.c:130)     do_syscall_64 (arch/x86/entry/common.c:87)     entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120)  We can\u0027t call mptcp_close under the \u0027fast\u0027 socket lock variant, replace it with a sock_lock_nested() as the relevant code is already under the listening msk socket lock protection.",
  "published": "2024-10-21T20:15:12Z",
  "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": 0.00153,
  "epssPercentile": 0.04468,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.0.12-1",
      "fix": "DEBIAN-CVE-2022-49018",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49018",
      "released": "2024-10-21T20:15:12Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.0.12-1",
      "fix": "DEBIAN-CVE-2022-49018",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49018",
      "released": "2024-10-21T20:15:12Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.0.12-1",
      "fix": "DEBIAN-CVE-2022-49018",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49018",
      "released": "2024-10-21T20:15:12Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}