CVE-2021-47498

{"id": "CVE-2021-47498", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "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": "2024-05-22T09:15:11.673", "references": [{"url": "https://git.kernel.org/stable/c/8050652810bf38241edec8717393d2446e8036f1", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8ca9745efe3528feb06ca4e117188038eea2d351", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b4459b11e84092658fa195a2587aff3b9637f0e7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8ca9745efe3528feb06ca4e117188038eea2d351", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/b4459b11e84092658fa195a2587aff3b9637f0e7", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm rq: don't queue request to blk-mq during DM suspend\n\nDM uses blk-mq's quiesce/unquiesce to stop/start device mapper queue.\n\nBut blk-mq's unquiesce may come from outside events, such as elevator\nswitch, updating nr_requests or others, and request may come during\nsuspend, so simply ask for blk-mq to requeue it.\n\nFixes one kernel panic issue when running updating nr_requests and\ndm-mpath suspend/resume stress test."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dm rq: no poner en cola la solicitud a blk-mq durante la suspensi\u00f3n de DM. DM utiliza la funci\u00f3n de reposo/inquiesce de blk-mq para detener/iniciar la cola del asignador de dispositivos. Pero la inquietud de blk-mq puede provenir de eventos externos, como el cambio de ascensor, la actualizaci\u00f3n de nr_requests u otros, y la solicitud puede ocurrir durante la suspensi\u00f3n, as\u00ed que simplemente solicite que blk-mq la vuelva a poner en cola. Soluciona un problema de p\u00e1nico del kernel al ejecutar la actualizaci\u00f3n de nr_requests y la prueba de esfuerzo de suspensi\u00f3n/reanudaci\u00f3n de dm-mpath."}], "lastModified": "2025-11-03T18:15:39.623", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CE91215B-03B1-46D5-AFF9-ADC36A2676CF", "versionEndExcluding": "5.14.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E46C74C6-B76B-4C94-A6A4-FD2FFF62D644"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "60134C3A-06E4-48C1-B04F-2903732A4E56"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0460DA88-8FE1-46A2-9DDA-1F1ABA552E71"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AF55383D-4DF2-45DC-93F7-571F4F978EAB"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9E9481B2-8AA6-4CBD-B5D3-C10F51FF6D01"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}