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CVE-2022-49018 (GCVE-0-2022-49018)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2026-05-23 15:21
VLAI
Title
mptcp: fix sleep in atomic at close time
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.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:12 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 30e51b923e436b631e8d5b77fa5e318c6b066dc7 , < d8e6c5500dbf0f3e87aace90d4beba6ae928e866 (git)
Affected: 30e51b923e436b631e8d5b77fa5e318c6b066dc7 , < b4f166651d03b5484fa179817ba8ad4899a5a6ac (git)
Affected: b41808bfa049d1bc7ce8ce1ad4d591f7d203ebb9 (git)
Affected: 5.19.14 , < 5.20 (semver)
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Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.0.12 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/mptcp/subflow.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"30e51b923e436b631e8d5b77fa5e318c6b066dc7\",\"lessThan\":\"d8e6c5500dbf0f3e87aace90d4beba6ae928e866\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"30e51b923e436b631e8d5b77fa5e318c6b066dc7\",\"lessThan\":\"b4f166651d03b5484fa179817ba8ad4899a5a6ac\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b41808bfa049d1bc7ce8ce1ad4d591f7d203ebb9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.19.14\",\"lessThan\":\"5.20\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/mptcp/subflow.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.0\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.0\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0.12\",\"lessThanOrEqual\":\"6.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-10-22T13:12:58.392450Z\",\"id\":\"CVE-2022-49018\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:23:22+00:00",
      "cve": "CVE-2022-49018",
      "id": "CVE-2022-49018",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mptcp: fix sleep in atomic at close time",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49018.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49018\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:12:58.392450Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:13:01.594Z\"}}], \"cna\": {\"title\": \"mptcp: fix sleep in atomic at close time\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"30e51b923e436b631e8d5b77fa5e318c6b066dc7\", \"lessThan\": \"d8e6c5500dbf0f3e87aace90d4beba6ae928e866\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"30e51b923e436b631e8d5b77fa5e318c6b066dc7\", \"lessThan\": \"b4f166651d03b5484fa179817ba8ad4899a5a6ac\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b41808bfa049d1bc7ce8ce1ad4d591f7d203ebb9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.19.14\", \"lessThan\": \"5.20\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/mptcp/subflow.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.0\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.0.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/mptcp/subflow.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/d8e6c5500dbf0f3e87aace90d4beba6ae928e866\"}, {\"url\": \"https://git.kernel.org/stable/c/b4f166651d03b5484fa179817ba8ad4899a5a6ac\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.12\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.19.14\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:21:25.307Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49018\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:21:25.307Z\", \"dateReserved\": \"2024-08-22T01:27:53.646Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T20:06:26.627Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.