CVE-2026-64146

{"id": "CVE-2026-64146", "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}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "bb88e8da00253bea0e7f0f4cdfd7910572d7799f", "lessThan": "89682dd09efb3825b0f162a72e342c52b69ea14a", "versionType": "git"}, {"status": "affected", "version": "bb88e8da00253bea0e7f0f4cdfd7910572d7799f", "lessThan": "3812cfe6cb0a5988df4fedcdaf9aab677b9cca61", "versionType": "git"}, {"status": "affected", "version": "bb88e8da00253bea0e7f0f4cdfd7910572d7799f", "lessThan": "e4a552e0b6413c1af2e140b5bc14bb849b411b57", "versionType": "git"}, {"status": "affected", "version": "bb88e8da00253bea0e7f0f4cdfd7910572d7799f", "lessThan": "fcb23bb31508b62e8a1b32adf6217820e90e29b0", "versionType": "git"}, {"status": "affected", "version": "bb88e8da00253bea0e7f0f4cdfd7910572d7799f", "lessThan": "492c73b21fefa36f3869cb2b188ffb7fe37b3a9b", "versionType": "git"}, {"status": "affected", "version": "bb88e8da00253bea0e7f0f4cdfd7910572d7799f", "lessThan": "79b09c54c6563df9846ca3094bcfd72082c3e1d7", "versionType": "git"}], "programFiles": ["fs/erofs/xattr.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.17"}, {"status": "unaffected", "version": "0", "lessThan": "5.17", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.191", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.160", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.114", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.57", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.11", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/erofs/xattr.c"], "defaultStatus": "affected"}]}], "published": "2026-07-19T16:17:56.547", "references": [{"url": "https://git.kernel.org/stable/c/3812cfe6cb0a5988df4fedcdaf9aab677b9cca61", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/492c73b21fefa36f3869cb2b188ffb7fe37b3a9b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/79b09c54c6563df9846ca3094bcfd72082c3e1d7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/89682dd09efb3825b0f162a72e342c52b69ea14a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e4a552e0b6413c1af2e140b5bc14bb849b411b57", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fcb23bb31508b62e8a1b32adf6217820e90e29b0", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "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\nerofs: fix metabuf leak in inode xattr initialization\n\ncommit bb88e8da0025 (\"erofs: use meta buffers for xattr operations\")\nconverted xattr operations to use on-stack erofs_buf instances.\nerofs_init_inode_xattrs() uses such a metabuf while reading the inline\nxattr header and shared xattr id array.\n\nSome error paths after erofs_read_metabuf() leave through out_unlock\nwithout dropping the metabuf, so the folio reference can leak.\n\nConsolidate the cleanup at out_unlock. erofs_put_metabuf() is a\nno-op if no folio has been acquired, and this keeps all paths after\ntaking EROFS_I_BL_XATTR_BIT covered by a single cleanup site."}], "lastModified": "2026-10-30T13:19:32.887", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "24396289-5572-4369-9C13-63B5E71C6FCD", "versionEndExcluding": "7.0.11", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}