CVE-2022-49914

{"id": "CVE-2022-49914", "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": "2025-05-01T15:16:16.593", "references": [{"url": "https://git.kernel.org/stable/c/2c0329406bb28109c07c6e23e5e3e0fa618a95d7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/396515db923ad5cbeb179d6b88927870b4cbebb7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6ba3479f9e96b9ad460c7e77abc26dd16e5dec4f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a52e24c7fcc3c5ce3588a14e3663c00868d36623", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b1dc9019bb5f89abae85645de1a2dd4830c1f8e9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cded2c89774b99b67c98147ae103ea878c92a206", "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\nbtrfs: fix inode list leak during backref walking at resolve_indirect_refs()\n\nDuring backref walking, at resolve_indirect_refs(), if we get an error\nwe jump to the 'out' label and call ulist_free() on the 'parents' ulist,\nwhich frees all the elements in the ulist - however that does not free\nany inode lists that may be attached to elements, through the 'aux' field\nof a ulist node, so we end up leaking lists if we have any attached to\nthe unodes.\n\nFix this by calling free_leaf_list() instead of ulist_free() when we exit\nfrom resolve_indirect_refs(). The static function free_leaf_list() is\nmoved up for this to be possible and it's slightly simplified by removing\nunnecessary code."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: correcci\u00f3n de fuga de lista de inodos durante el recorrido de backref en resolve_indirect_refs() Durante el recorrido de backref, en resolve_indirect_refs(), si obtenemos un error saltamos a la etiqueta 'out' y llamamos a ulist_free() en la ulist 'parents', que libera todos los elementos en la ulist - sin embargo, eso no libera ninguna lista de inodos que pueda estar adjunta a elementos, a trav\u00e9s del campo 'aux' de un nodo ulist, por lo que terminamos filtrando listas si tenemos alguna adjunta a los unodes. Arregle esto llamando a free_leaf_list() en lugar de ulist_free() cuando salimos de resolve_indirect_refs(). La funci\u00f3n est\u00e1tica free_leaf_list() se mueve hacia arriba para que esto sea posible y se simplifica ligeramente eliminando c\u00f3digo innecesario."}], "lastModified": "2025-11-12T16:06:57.320", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "050E0517-4ED0-4122-9D26-1744A2674706", "versionEndExcluding": "4.14.299", "versionStartIncluding": "3.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ABED5D97-9B16-4CF6-86E3-D5F5C4358E35", "versionEndExcluding": "4.19.265", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D67A077-EB45-4ADE-94CD-F9A76F6C319C", "versionEndExcluding": "5.4.224", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "475D097C-AB5A-4CF5-899F-413077854ABD", "versionEndExcluding": "5.10.154", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AB8B27B9-B41B-42D5-AE67-0A89A8A8EEB1", "versionEndExcluding": "5.15.78", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EC9A754E-625D-42F3-87A7-960D643E2867", "versionEndExcluding": "6.0.8", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}