fkie_cve-2022-49018
Vulnerability from fkie_nvd
Published
2024-10-21 20:15
Modified
2024-10-24 18:38
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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 (&sb->s_type->i_mutex_key#6){+.+.}-{3:3}, at: __sock_release (net/socket.c:650) #1: ffff88800b498130 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close (net/mptcp/protocol.c:2973) #2: ffff88800b49a130 (sk_lock-AF_INET/1){+.+.}-{0:0}, at: __mptcp_close_ssk (net/mptcp/protocol.c:2363) #3: ffff88800b49a0b0 (slock-AF_INET){+...}-{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 + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Call Trace: <TASK> 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't call mptcp_close under the 'fast' socket lock variant, replace it with a sock_lock_nested() as the relevant code is already under the listening msk socket lock protection.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4f166651d03b5484fa179817ba8ad4899a5a6acPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d8e6c5500dbf0f3e87aace90d4beba6ae928e866Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1


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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix sleep in atomic at close time\n\nMatt reported a splat at msk close time:\n\n    BUG: sleeping function called from invalid context at net/mptcp/protocol.c:2877\n    in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 155, name: packetdrill\n    preempt_count: 201, expected: 0\n    RCU nest depth: 0, expected: 0\n    4 locks held by packetdrill/155:\n    #0: ffff888001536990 (\u0026sb-\u003es_type-\u003ei_mutex_key#6){+.+.}-{3:3}, at: __sock_release (net/socket.c:650)\n    #1: ffff88800b498130 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close (net/mptcp/protocol.c:2973)\n    #2: ffff88800b49a130 (sk_lock-AF_INET/1){+.+.}-{0:0}, at: __mptcp_close_ssk (net/mptcp/protocol.c:2363)\n    #3: ffff88800b49a0b0 (slock-AF_INET){+...}-{2:2}, at: __lock_sock_fast (include/net/sock.h:1820)\n    Preemption disabled at:\n    0x0\n    CPU: 1 PID: 155 Comm: packetdrill Not tainted 6.1.0-rc5 #365\n    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n    Call Trace:\n    \u003cTASK\u003e\n    dump_stack_lvl (lib/dump_stack.c:107 (discriminator 4))\n    __might_resched.cold (kernel/sched/core.c:9891)\n    __mptcp_destroy_sock (include/linux/kernel.h:110)\n    __mptcp_close (net/mptcp/protocol.c:2959)\n    mptcp_subflow_queue_clean (include/net/sock.h:1777)\n    __mptcp_close_ssk (net/mptcp/protocol.c:2363)\n    mptcp_destroy_common (net/mptcp/protocol.c:3170)\n    mptcp_destroy (include/net/sock.h:1495)\n    __mptcp_destroy_sock (net/mptcp/protocol.c:2886)\n    __mptcp_close (net/mptcp/protocol.c:2959)\n    mptcp_close (net/mptcp/protocol.c:2974)\n    inet_release (net/ipv4/af_inet.c:432)\n    __sock_release (net/socket.c:651)\n    sock_close (net/socket.c:1367)\n    __fput (fs/file_table.c:320)\n    task_work_run (kernel/task_work.c:181 (discriminator 1))\n    exit_to_user_mode_prepare (include/linux/resume_user_mode.h:49)\n    syscall_exit_to_user_mode (kernel/entry/common.c:130)\n    do_syscall_64 (arch/x86/entry/common.c:87)\n    entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120)\n\nWe can\u0027t call mptcp_close under the \u0027fast\u0027 socket lock variant, replace\nit with a sock_lock_nested() as the relevant code is already under the\nlistening msk socket lock protection."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: se corrige la suspensi\u00f3n en atomic en el momento del cierre Matt inform\u00f3 un splat en el momento del cierre de msk: ERROR: funci\u00f3n de suspensi\u00f3n llamada desde un contexto no v\u00e1lido en net/mptcp/protocol.c:2877 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 155, name: packetdrill preempt_count: 201, expected: 0 Profundidad de anidaci\u00f3n de RCU: 0, expected: 0 4 bloqueos mantenidos por packetdrill/155: #0: ffff888001536990 (\u0026amp;sb-\u0026gt;s_type-\u0026gt;i_mutex_key#6){+.+.}-{3:3}, en: __sock_release (net/socket.c:650) #1: ffff88800b498130 (sk_lock-AF_INET){+.+.}-{0:0}, en: mptcp_close (net/mptcp/protocol.c:2973) #2: ffff88800b49a130 (sk_lock-AF_INET/1){+.+.}-{0:0}, en: __mptcp_close_ssk (net/mptcp/protocol.c:2363) #3: ffff88800b49a0b0 (slock-AF_INET){+...}-{2:2}, en: __lock_sock_fast (include/net/sock.h:1820) Preempci\u00f3n deshabilitada en: 0x0 CPU: 1 PID: 155 Comm: packetdrill No contaminado 6.1.0-rc5 #365 Nombre del hardware: QEMU PC est\u00e1ndar (i440FX + PIIX, 1996), BIOS 1.15.0-1 01/04/2014 Seguimiento de llamadas:  dump_stack_lvl (lib/dump_stack.c:107 (discriminador 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 (discriminador 1)) salir_a_modo_usuario_preparar (include/linux/reanudar_modo_usuario.h:49) No podemos llamar a mptcp_close bajo la variante de bloqueo de socket \u0027r\u00e1pido\u0027, reempl\u00e1celo con sock_lock_nested() ya que el c\u00f3digo relevante ya est\u00e1 bajo la protecci\u00f3n de bloqueo de socket msk de escucha."
    }
  ],
  "id": "CVE-2022-49018",
  "lastModified": "2024-10-24T18:38:38.033",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-10-21T20:15:12.973",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b4f166651d03b5484fa179817ba8ad4899a5a6ac"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/d8e6c5500dbf0f3e87aace90d4beba6ae928e866"
    }
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-667"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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