CVE-2024-26686

{"id": "CVE-2024-26686", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "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": "2024-04-03T15:15:52.263", "references": [{"url": "https://git.kernel.org/stable/c/0c35d1914353799c54fa1843fe7dea6fcbcdbac5", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/27978243f165b44e342f28f449b91327944ea071", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3820b0fac7732a653bcc6f6ac20c1d72e697f8f6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4fe85bdaabd63f8f8579b24a10ed597c9c482164", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7601df8031fd67310af891897ef6cc0df4209305", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/27978243f165b44e342f28f449b91327944ea071", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/7601df8031fd67310af891897ef6cc0df4209305", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-667"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats\n\nlock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call\ndo_task_stat() at the same time and the process has NR_THREADS, it will\nspin with irqs disabled O(NR_CPUS * NR_THREADS) time.\n\nChange do_task_stat() to use sig->stats_lock to gather the statistics\noutside of ->siglock protected section, in the likely case this code will\nrun lockless."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fs/proc: do_task_stat: use sig->stats_lock para recopilar las estad\u00edsticas de subprocesos/hijos lock_task_sighand() puede desencadenar un bloqueo completo. Si los subprocesos NR_CPUS llaman a do_task_stat() al mismo tiempo y el proceso tiene NR_THREADS, girar\u00e1 con irqs deshabilitados O(NR_CPUS * NR_THREADS) tiempo. Cambie do_task_stat() para usar sig->stats_lock para recopilar las estad\u00edsticas fuera de ->secci\u00f3n protegida siglock, en el caso probable de que este c\u00f3digo se ejecute sin bloqueo."}], "lastModified": "2025-11-03T20:16:10.460", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4CC97550-2BA7-4039-97D5-186B9907FC6D", "versionEndExcluding": "6.1.82"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7BADF976-3B39-485C-A14E-7B78C859F4A0", "versionEndExcluding": "6.7.6", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B9F4EA73-0894-400F-A490-3A397AB7A517"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "056BD938-0A27-4569-B391-30578B309EE3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F02056A5-B362-4370-9FF8-6F0BD384D520"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}