CVE-2022-48846

{"id": "CVE-2022-48846", "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": "2024-07-16T13:15:11.883", "references": [{"url": "https://git.kernel.org/stable/c/60c2c8e2ef3a3ec79de8cbc80a06ca0c21df8c29", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d4ad8736ac982111bb0be8306bf19c8207f6600e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/daaca3522a8e67c46e39ef09c1d542e866f85f3b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-401"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: release rq qos structures for queue without disk\n\nblkcg_init_queue() may add rq qos structures to request queue, previously\nblk_cleanup_queue() calls rq_qos_exit() to release them, but commit\n8e141f9eb803 (\"block: drain file system I/O on del_gendisk\")\nmoves rq_qos_exit() into del_gendisk(), so memory leak is caused\nbecause queues may not have disk, such as un-present scsi luns, nvme\nadmin queue, ...\n\nFixes the issue by adding rq_qos_exit() to blk_cleanup_queue() back.\n\nBTW, v5.18 won't need this patch any more since we move\nblkcg_init_queue()/blkcg_exit_queue() into disk allocation/release\nhandler, and patches have been in for-5.18/block."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bloque: liberar estructuras rq qos para cola sin disco blkcg_init_queue() puede agregar estructuras rq qos para solicitar cola, previamente blk_cleanup_queue() llama a rq_qos_exit() para liberarlas, pero commit 8e141f9eb803 ( \"bloque: drenar la E/S del sistema de archivos en del_gendisk\") mueve rq_qos_exit() a del_gendisk(), por lo que la p\u00e9rdida de memoria se debe a que es posible que las colas no tengan disco, como los luns scsi no presentes, la cola de administraci\u00f3n de nvme, ... solucione el problema agregando rq_qos_exit() a blk_cleanup_queue() nuevamente. Por cierto, v5.18 ya no necesitar\u00e1 este parche ya que movemos blkcg_init_queue()/blkcg_exit_queue() al controlador de asignaci\u00f3n/liberaci\u00f3n de disco, y los parches han estado en for-5.18/block."}], "lastModified": "2024-07-24T17:56:26.767", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6C0FC864-77A5-46FD-A8AB-1D4AB43DFFD4", "versionEndExcluding": "5.15.31", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DC9A634D-C617-4F8C-ADEF-AF94CE69D687", "versionEndExcluding": "5.16.17", "versionStartIncluding": "5.16"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}