cve-2022-49914
Vulnerability from cvelistv5
Published
2025-05-01 14:10
Modified
2025-05-04 08:48
Severity ?
EPSS score ?
Summary
btrfs: fix inode list leak during backref walking at resolve_indirect_refs()
References
{ "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "fs/btrfs/backref.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "b1dc9019bb5f89abae85645de1a2dd4830c1f8e9", "status": "affected", "version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "versionType": "git" }, { "lessThan": "cded2c89774b99b67c98147ae103ea878c92a206", "status": "affected", "version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "versionType": "git" }, { "lessThan": "2c0329406bb28109c07c6e23e5e3e0fa618a95d7", "status": "affected", "version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "versionType": "git" }, { "lessThan": "a52e24c7fcc3c5ce3588a14e3663c00868d36623", "status": "affected", "version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "versionType": "git" }, { "lessThan": "6ba3479f9e96b9ad460c7e77abc26dd16e5dec4f", "status": "affected", "version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "versionType": "git" }, { "lessThan": "396515db923ad5cbeb179d6b88927870b4cbebb7", "status": "affected", "version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "versionType": "git" }, { "lessThan": "5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1", "status": "affected", "version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "fs/btrfs/backref.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "3.5" }, { "lessThan": "3.5", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.299", "versionType": "semver" }, { "lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.265", "versionType": "semver" }, { "lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.224", "versionType": "semver" }, { "lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.154", "versionType": "semver" }, { "lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.78", "versionType": "semver" }, { "lessThanOrEqual": "6.0.*", "status": "unaffected", "version": "6.0.8", "versionType": "semver" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "6.1", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.14.299", "versionStartIncluding": "3.5", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.19.265", "versionStartIncluding": "3.5", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.4.224", "versionStartIncluding": "3.5", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.10.154", "versionStartIncluding": "3.5", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.15.78", "versionStartIncluding": "3.5", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.0.8", "versionStartIncluding": "3.5", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.1", "versionStartIncluding": "3.5", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "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 \u0027out\u0027 label and call ulist_free() on the \u0027parents\u0027 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 \u0027aux\u0027 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\u0027s slightly simplified by removing\nunnecessary code." } ], "providerMetadata": { "dateUpdated": "2025-05-04T08:48:35.172Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/b1dc9019bb5f89abae85645de1a2dd4830c1f8e9" }, { "url": "https://git.kernel.org/stable/c/cded2c89774b99b67c98147ae103ea878c92a206" }, { "url": "https://git.kernel.org/stable/c/2c0329406bb28109c07c6e23e5e3e0fa618a95d7" }, { "url": "https://git.kernel.org/stable/c/a52e24c7fcc3c5ce3588a14e3663c00868d36623" }, { "url": "https://git.kernel.org/stable/c/6ba3479f9e96b9ad460c7e77abc26dd16e5dec4f" }, { "url": "https://git.kernel.org/stable/c/396515db923ad5cbeb179d6b88927870b4cbebb7" }, { "url": "https://git.kernel.org/stable/c/5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1" } ], "title": "btrfs: fix inode list leak during backref walking at resolve_indirect_refs()", "x_generator": { "engine": "bippy-1.2.0" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2022-49914", "datePublished": "2025-05-01T14:10:55.581Z", "dateReserved": "2025-05-01T14:05:17.250Z", "dateUpdated": "2025-05-04T08:48:35.172Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2022-49914\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:16.593\",\"lastModified\":\"2025-05-02T13:52:51.693\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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 \u0027out\u0027 label and call ulist_free() on the \u0027parents\u0027 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 \u0027aux\u0027 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\u0027s 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 \u0027out\u0027 y llamamos a ulist_free() en la ulist \u0027parents\u0027, 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 \u0027aux\u0027 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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2c0329406bb28109c07c6e23e5e3e0fa618a95d7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/396515db923ad5cbeb179d6b88927870b4cbebb7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6ba3479f9e96b9ad460c7e77abc26dd16e5dec4f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a52e24c7fcc3c5ce3588a14e3663c00868d36623\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b1dc9019bb5f89abae85645de1a2dd4830c1f8e9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cded2c89774b99b67c98147ae103ea878c92a206\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}" } }
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