CVE-2024-42232 (GCVE-0-2024-42232)

Vulnerability from cvelistv5 – Published: 2024-08-07 15:14 – Updated: 2026-05-11 20:28
VLAI
Title
libceph: fix race between delayed_work() and ceph_monc_stop()
Summary
In the Linux kernel, the following vulnerability has been resolved: libceph: fix race between delayed_work() and ceph_monc_stop() The way the delayed work is handled in ceph_monc_stop() is prone to races with mon_fault() and possibly also finish_hunting(). Both of these can requeue the delayed work which wouldn't be canceled by any of the following code in case that happens after cancel_delayed_work_sync() runs -- __close_session() doesn't mess with the delayed work in order to avoid interfering with the hunting interval logic. This part was missed in commit b5d91704f53e ("libceph: behave in mon_fault() if cur_mon < 0") and use-after-free can still ensue on monc and objects that hang off of it, with monc->auth and monc->monmap being particularly susceptible to quickly being reused. To fix this: - clear monc->cur_mon and monc->hunting as part of closing the session in ceph_monc_stop() - bail from delayed_work() if monc->cur_mon is cleared, similar to how it's done in mon_fault() and finish_hunting() (based on monc->hunting) - call cancel_delayed_work_sync() after the session is closed
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 1177afeca833174ba83504688eec898c6214f4bf (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 63e5d035e3a7ab7412a008f202633c5e6a0a28ea (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 34b76d1922e41da1fa73d43b764cddd82ac9733c (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 20cf67dcb7db842f941eff1af6ee5e9dc41796d7 (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 2d33654d40a05afd91ab24c9a73ab512a0670a9a (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 9525af1f58f67df387768770fcf6d6a8f23aee3d (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 33d38c5da17f8db2d80e811b7829d2822c10625e (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 69c7b2fe4c9cc1d3b1186d1c5606627ecf0de883 (git)
Create a notification for this product.
Linux Linux Affected: 4.6
Unaffected: 0 , < 4.6 (semver)
Unaffected: 4.19.318 , ≤ 4.19.* (semver)
Unaffected: 5.4.280 , ≤ 5.4.* (semver)
Unaffected: 5.10.222 , ≤ 5.10.* (semver)
Unaffected: 5.15.163 , ≤ 5.15.* (semver)
Unaffected: 6.1.100 , ≤ 6.1.* (semver)
Unaffected: 6.6.41 , ≤ 6.6.* (semver)
Unaffected: 6.9.10 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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      "id": "CVE-2024-42232",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-42232\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-08-07T16:15:46.213\",\"lastModified\":\"2025-11-03T22:17:46.643\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nlibceph: fix race between delayed_work() and ceph_monc_stop()\\n\\nThe way the delayed work is handled in ceph_monc_stop() is prone to\\nraces with mon_fault() and possibly also finish_hunting().  Both of\\nthese can requeue the delayed work which wouldn\u0027t be canceled by any of\\nthe following code in case that happens after cancel_delayed_work_sync()\\nruns -- __close_session() doesn\u0027t mess with the delayed work in order\\nto avoid interfering with the hunting interval logic.  This part was\\nmissed in commit b5d91704f53e (\\\"libceph: behave in mon_fault() if\\ncur_mon \u003c 0\\\") and use-after-free can still ensue on monc and objects\\nthat hang off of it, with monc-\u003eauth and monc-\u003emonmap being\\nparticularly susceptible to quickly being reused.\\n\\nTo fix this:\\n\\n- clear monc-\u003ecur_mon and monc-\u003ehunting as part of closing the session\\n  in ceph_monc_stop()\\n- bail from delayed_work() if monc-\u003ecur_mon is cleared, similar to how\\n  it\u0027s done in mon_fault() and finish_hunting() (based on monc-\u003ehunting)\\n- call cancel_delayed_work_sync() after the session is closed\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: libceph: corrige la ejecuci\u00f3n entre retardado_work() y ceph_monc_stop() La forma en que se maneja el trabajo retrasado en ceph_monc_stop() es propensa a ejecuci\u00f3ns con mon_fault() y posiblemente tambi\u00e9n con Finish_hunting(). Ambos pueden volver a poner en cola el trabajo retrasado que no ser\u00eda cancelado por ninguno de los siguientes c\u00f3digos en caso de que eso suceda despu\u00e9s de que se ejecute cancel_delayed_work_sync() - __close_session() no interfiere con el trabajo retrasado para evitar interferir con la b\u00fasqueda l\u00f3gica de intervalo. Esta parte se omiti\u00f3 en el commit b5d91704f53e (\\\"libceph: comportarse en mon_fault() si cur_mon \u0026lt; 0\\\") y el use-after-free a\u00fan puede producirse en monc y los objetos que cuelgan de \u00e9l, con monc-\u0026gt;auth y monc-\u0026gt; monmap es particularmente susceptible de ser reutilizado r\u00e1pidamente. Para solucionar esto: - borre monc-\u0026gt;cur_mon y monc-\u0026gt;hunting como parte del cierre de la sesi\u00f3n en ceph_monc_stop() - libere de delay_work() si monc-\u0026gt;cur_mon est\u00e1 borrado, similar a como se hace en mon_fault() y Finish_hunting () (basado en monc-\u0026gt;hunting): llame a cancel_delayed_work_sync() despu\u00e9s de cerrar la sesi\u00f3n\"}],\"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\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.19.318\",\"matchCriteriaId\":\"43E390F8-BDB4-4990-B94D-095DD8369C31\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.280\",\"matchCriteriaId\":\"625DBFAB-C3D0-4309-A27F-12D6428FB38F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.222\",\"matchCriteriaId\":\"00696AC5-EE29-437F-97F9-C4D66608B327\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.163\",\"matchCriteriaId\":\"A97DEB09-4927-40F8-B5C6-F5BD5EAE0CFD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.100\",\"matchCriteriaId\":\"100CDF74-4DB5-4FC6-A54B-BDBDB0C27137\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.41\",\"matchCriteriaId\":\"96AC42B8-D66D-4AC5-B466-E9BA7910FA29\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.10\",\"matchCriteriaId\":\"AB2E8DEC-CFD5-4C2B-981D-E7E45A36C352\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1177afeca833174ba83504688eec898c6214f4bf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/20cf67dcb7db842f941eff1af6ee5e9dc41796d7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2d33654d40a05afd91ab24c9a73ab512a0670a9a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/33d38c5da17f8db2d80e811b7829d2822c10625e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/34b76d1922e41da1fa73d43b764cddd82ac9733c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/63e5d035e3a7ab7412a008f202633c5e6a0a28ea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/69c7b2fe4c9cc1d3b1186d1c5606627ecf0de883\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9525af1f58f67df387768770fcf6d6a8f23aee3d\",\"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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      "cveMetadata": "{\"cveId\": \"CVE-2024-42232\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-05T10:52:04.283Z\", \"dateReserved\": \"2024-07-30T07:40:12.251Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-07T15:14:23.074Z\", \"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

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.