CVE-2022-49914

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The static function free_leaf_list() is\nmoved up for this to be possible and it's slightly simplified by removing\nunnecessary code."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/backref.c"], "versions": [{"version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "lessThan": "b1dc9019bb5f89abae85645de1a2dd4830c1f8e9", "status": "affected", "versionType": "git"}, {"version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "lessThan": "cded2c89774b99b67c98147ae103ea878c92a206", "status": "affected", "versionType": "git"}, {"version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "lessThan": "2c0329406bb28109c07c6e23e5e3e0fa618a95d7", "status": "affected", "versionType": "git"}, {"version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "lessThan": "a52e24c7fcc3c5ce3588a14e3663c00868d36623", "status": "affected", "versionType": "git"}, {"version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "lessThan": "6ba3479f9e96b9ad460c7e77abc26dd16e5dec4f", "status": "affected", "versionType": "git"}, {"version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "lessThan": "396515db923ad5cbeb179d6b88927870b4cbebb7", "status": "affected", "versionType": "git"}, {"version": "3301958b7c1dae8f0f5ded63aa881e0b71e78464", "lessThan": "5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/backref.c"], "versions": [{"version": "3.5", "status": "affected"}, {"version": "0", "lessThan": "3.5", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.299", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.265", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.224", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.154", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.78", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.8", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "4.14.299"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "4.19.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "5.4.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "5.10.154"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "5.15.78"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "6.0.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "6.1"}]}]}], "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"}}}}

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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."}], "id": "CVE-2022-49914", "lastModified": "2026-06-17T05:19:30.010", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-05-01T15:16:16.593", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2c0329406bb28109c07c6e23e5e3e0fa618a95d7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/396515db923ad5cbeb179d6b88927870b4cbebb7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6ba3479f9e96b9ad460c7e77abc26dd16e5dec4f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a52e24c7fcc3c5ce3588a14e3663c00868d36623"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b1dc9019bb5f89abae85645de1a2dd4830c1f8e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cded2c89774b99b67c98147ae103ea878c92a206"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: btrfs: fix inode list leak during backref walking at resolve_indirect_refs()", "id": "2363512", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363512"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-401", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: fix inode list leak during backref walking at resolve_indirect_refs()\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.\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."], "name": "CVE-2022-49914", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49914\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49914\nhttps://lore.kernel.org/linux-cve-announce/2025050106-CVE-2022-49914-42a6@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-06-20T13:55:53.776710+00:00", "updated": "2025-06-20T13:55:53.776794+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}