CVE-2024-42232

{"id": "CVE-2024-42232", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-08-07T16:15:46.213", "references": [{"url": "https://git.kernel.org/stable/c/1177afeca833174ba83504688eec898c6214f4bf", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/20cf67dcb7db842f941eff1af6ee5e9dc41796d7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2d33654d40a05afd91ab24c9a73ab512a0670a9a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/33d38c5da17f8db2d80e811b7829d2822c10625e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/34b76d1922e41da1fa73d43b764cddd82ac9733c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/63e5d035e3a7ab7412a008f202633c5e6a0a28ea", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/69c7b2fe4c9cc1d3b1186d1c5606627ecf0de883", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9525af1f58f67df387768770fcf6d6a8f23aee3d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "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't be canceled by any of\nthe following code in case that happens after cancel_delayed_work_sync()\nruns -- __close_session() doesn't 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 < 0\") and use-after-free can still ensue on monc and objects\nthat hang off of it, with monc->auth and monc->monmap being\nparticularly susceptible to quickly being reused.\n\nTo fix this:\n\n- clear monc->cur_mon and monc->hunting as part of closing the session\n in ceph_monc_stop()\n- bail from delayed_work() if monc->cur_mon is cleared, similar to how\n it's done in mon_fault() and finish_hunting() (based on monc->hunting)\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 &lt; 0\") y el use-after-free a\u00fan puede producirse en monc y los objetos que cuelgan de \u00e9l, con monc-&gt;auth y monc-&gt; monmap es particularmente susceptible de ser reutilizado r\u00e1pidamente. Para solucionar esto: - borre monc-&gt;cur_mon y monc-&gt;hunting como parte del cierre de la sesi\u00f3n en ceph_monc_stop() - libere de delay_work() si monc-&gt;cur_mon est\u00e1 borrado, similar a como se hace en mon_fault() y Finish_hunting () (basado en monc-&gt;hunting): llame a cancel_delayed_work_sync() despu\u00e9s de cerrar la sesi\u00f3n"}], "lastModified": "2024-08-08T15:02:09.750", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "43E390F8-BDB4-4990-B94D-095DD8369C31", "versionEndExcluding": "4.19.318"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "625DBFAB-C3D0-4309-A27F-12D6428FB38F", "versionEndExcluding": "5.4.280", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "00696AC5-EE29-437F-97F9-C4D66608B327", "versionEndExcluding": "5.10.222", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A97DEB09-4927-40F8-B5C6-F5BD5EAE0CFD", "versionEndExcluding": "5.15.163", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "100CDF74-4DB5-4FC6-A54B-BDBDB0C27137", "versionEndExcluding": "6.1.100", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "96AC42B8-D66D-4AC5-B466-E9BA7910FA29", "versionEndExcluding": "6.6.41", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AB2E8DEC-CFD5-4C2B-981D-E7E45A36C352", "versionEndExcluding": "6.9.10", "versionStartIncluding": "6.7"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}