CVE-2022-49377

{"id": "CVE-2022-49377", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2025-02-26T07:01:14.357", "references": [{"url": "https://git.kernel.org/stable/c/460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5d05426e2d5fd7df8afc866b78c36b37b00188b7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/70fdd922c7bf8949f8df109cf2635dff64c90392", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b140bac470b4f707cda59c7266214246238661df", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: don't touch ->tagset in blk_mq_get_sq_hctx\n\nblk_mq_run_hw_queues() could be run when there isn't queued request and\nafter queue is cleaned up, at that time tagset is freed, because tagset\nlifetime is covered by driver, and often freed after blk_cleanup_queue()\nreturns.\n\nSo don't touch ->tagset for figuring out current default hctx by the mapping\nbuilt in request queue, so use-after-free on tagset can be avoided. Meantime\nthis way should be fast than retrieving mapping from tagset."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: blk-mq: no toque ->tagset en blk_mq_get_sq_hctx blk_mq_run_hw_queues() podr\u00eda ejecutarse cuando no hay una solicitud en cola y despu\u00e9s de que se limpie la cola, en ese momento se libera el conjunto de etiquetas, porque el controlador cubre la vida \u00fatil del conjunto de etiquetas y, a menudo, se libera despu\u00e9s de que blk_cleanup_queue() regrese. Por lo tanto, no toque ->tagset para averiguar el hctx predeterminado actual por el mapeo integrado en la cola de solicitudes, por lo que se puede evitar el use-after-free en el conjunto de etiquetas. Mientras tanto, esta forma deber\u00eda ser m\u00e1s r\u00e1pida que recuperar el mapeo del conjunto de etiquetas."}], "lastModified": "2025-03-25T14:58:01.213", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E8CE53EB-22BF-479D-A782-6BDD74CD210E", "versionEndExcluding": "5.15.47", "versionStartIncluding": "5.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "53E7AA2E-2FB4-45CA-A22B-08B4EDBB51AD", "versionEndExcluding": "5.17.15", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA6D643C-6D6A-4821-8A8D-B5776B8F0103", "versionEndExcluding": "5.18.4", "versionStartIncluding": "5.18"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}