CVE-2024-44958 (GCVE-0-2024-44958)

Vulnerability from cvelistv5 – Published: 2024-09-04 18:35 – Updated: 2026-05-11 20:32
VLAI?
Title
sched/smt: Fix unbalance sched_smt_present dec/inc
Summary
In the Linux kernel, the following vulnerability has been resolved: sched/smt: Fix unbalance sched_smt_present dec/inc I got the following warn report while doing stress test: jump label: negative count! WARNING: CPU: 3 PID: 38 at kernel/jump_label.c:263 static_key_slow_try_dec+0x9d/0xb0 Call Trace: <TASK> __static_key_slow_dec_cpuslocked+0x16/0x70 sched_cpu_deactivate+0x26e/0x2a0 cpuhp_invoke_callback+0x3ad/0x10d0 cpuhp_thread_fun+0x3f5/0x680 smpboot_thread_fn+0x56d/0x8d0 kthread+0x309/0x400 ret_from_fork+0x41/0x70 ret_from_fork_asm+0x1b/0x30 </TASK> Because when cpuset_cpu_inactive() fails in sched_cpu_deactivate(), the cpu offline failed, but sched_smt_present is decremented before calling sched_cpu_deactivate(), it leads to unbalanced dec/inc, so fix it by incrementing sched_smt_present in the error path.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c5511d03ec090980732e929c318a7a6374b5550e , < 2a3548c7ef2e135aee40e7e5e44e7d11b893e7c4 (git)
Affected: c5511d03ec090980732e929c318a7a6374b5550e , < 2cf7665efe451e48d27953e6b5bc627d518c902b (git)
Affected: c5511d03ec090980732e929c318a7a6374b5550e , < 65727331b60197b742089855ac09464c22b96f66 (git)
Affected: c5511d03ec090980732e929c318a7a6374b5550e , < d0c87a3c6be10a57aa3463c32c3fc6b2a47c3dab (git)
Affected: c5511d03ec090980732e929c318a7a6374b5550e , < e22f910a26cc2a3ac9c66b8e935ef2a7dd881117 (git)
Affected: 01659361c63fdc91c0af239d08cdd211d590a656 (git)
Affected: a2c094816f894b7a265851fad858e994fa0f78b3 (git)
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Linux Linux Affected: 4.20
Unaffected: 0 , < 4.20 (semver)
Unaffected: 5.15.165 , ≤ 5.15.* (semver)
Unaffected: 6.1.105 , ≤ 6.1.* (semver)
Unaffected: 6.6.46 , ≤ 6.6.* (semver)
Unaffected: 6.10.5 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-44958\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-04T19:15:30.580\",\"lastModified\":\"2025-11-03T23:15:44.323\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsched/smt: Fix unbalance sched_smt_present dec/inc\\n\\nI got the following warn report while doing stress test:\\n\\njump label: negative count!\\nWARNING: CPU: 3 PID: 38 at kernel/jump_label.c:263 static_key_slow_try_dec+0x9d/0xb0\\nCall Trace:\\n \u003cTASK\u003e\\n __static_key_slow_dec_cpuslocked+0x16/0x70\\n sched_cpu_deactivate+0x26e/0x2a0\\n cpuhp_invoke_callback+0x3ad/0x10d0\\n cpuhp_thread_fun+0x3f5/0x680\\n smpboot_thread_fn+0x56d/0x8d0\\n kthread+0x309/0x400\\n ret_from_fork+0x41/0x70\\n ret_from_fork_asm+0x1b/0x30\\n \u003c/TASK\u003e\\n\\nBecause when cpuset_cpu_inactive() fails in sched_cpu_deactivate(),\\nthe cpu offline failed, but sched_smt_present is decremented before\\ncalling sched_cpu_deactivate(), it leads to unbalanced dec/inc, so\\nfix it by incrementing sched_smt_present in the error path.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sched/smt: Corregir desequilibrio en sched_smt_present dec/inc Recib\u00ed el siguiente informe de advertencia mientras realizaba una prueba de estr\u00e9s: etiqueta de salto: \u00a1recuento negativo! ADVERTENCIA: CPU: 3 PID: 38 en kernel/jump_label.c:263 static_key_slow_try_dec+0x9d/0xb0 Seguimiento de llamadas:  __static_key_slow_dec_cpuslocked+0x16/0x70 sched_cpu_deactivate+0x26e/0x2a0 cpuhp_invoke_callback+0x3ad/0x10d0 cpuhp_thread_fun+0x3f5/0x680 smpboot_thread_fn+0x56d/0x8d0 kthread+0x309/0x400 ret_from_fork+0x41/0x70 ret_from_fork_asm+0x1b/0x30  Porque cuando cpuset_cpu_inactive() falla en sched_cpu_deactivate(), la CPU fuera de l\u00ednea fall\u00f3, pero sched_smt_present se decrementa antes de llamar a sched_cpu_deactivate(), esto genera un dec/inc desequilibrado, por lo que debe solucionarlo incrementando sched_smt_present en la ruta de error.\"}],\"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}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.14.86\",\"versionEndExcluding\":\"4.15\",\"matchCriteriaId\":\"4B10ECDC-134F-409F-8DC5-1B38E76D5478\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19.7\",\"versionEndExcluding\":\"4.20\",\"matchCriteriaId\":\"BFCE51A8-A708-49F5-B629-C107F587C29F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.15.165\",\"matchCriteriaId\":\"4F2025E4-76F7-4500-8020-B236CD18654A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.105\",\"matchCriteriaId\":\"89BEB24B-0F37-4C92-A397-564DA7CD8EE9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.46\",\"matchCriteriaId\":\"FA11941E-81FB-484C-B583-881EEB488340\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.5\",\"matchCriteriaId\":\"D074AE50-4A5E-499C-A2FD-75FD60DEA560\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2a3548c7ef2e135aee40e7e5e44e7d11b893e7c4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2cf7665efe451e48d27953e6b5bc627d518c902b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/65727331b60197b742089855ac09464c22b96f66\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d0c87a3c6be10a57aa3463c32c3fc6b2a47c3dab\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e22f910a26cc2a3ac9c66b8e935ef2a7dd881117\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
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label: negative count!\\nWARNING: CPU: 3 PID: 38 at kernel/jump_label.c:263 static_key_slow_try_dec+0x9d/0xb0\\nCall Trace:\\n \u003cTASK\u003e\\n __static_key_slow_dec_cpuslocked+0x16/0x70\\n sched_cpu_deactivate+0x26e/0x2a0\\n cpuhp_invoke_callback+0x3ad/0x10d0\\n cpuhp_thread_fun+0x3f5/0x680\\n smpboot_thread_fn+0x56d/0x8d0\\n kthread+0x309/0x400\\n ret_from_fork+0x41/0x70\\n ret_from_fork_asm+0x1b/0x30\\n \u003c/TASK\u003e\\n\\nBecause when cpuset_cpu_inactive() fails in sched_cpu_deactivate(),\\nthe cpu offline failed, but sched_smt_present is decremented before\\ncalling sched_cpu_deactivate(), it leads to unbalanced dec/inc, so\\nfix it by incrementing sched_smt_present in the error path.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.165\", \"versionStartIncluding\": \"4.20\"}, {\"criteria\": 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\"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:32:43.658Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-44958\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:32:43.658Z\", \"dateReserved\": \"2024-08-21T05:34:56.666Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-04T18:35:56.655Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.




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

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • 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.