{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63812", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.013Z", "datePublished": "2026-07-19T12:02:13.606Z", "dateUpdated": "2026-07-20T13:40:19.633Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-20T13:40:19.633Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix incorrect FI_NO_EXTENT handling in __destroy_extent_node()\n\nWhen __destroy_extent_node() sets the inode flag FI_NO_EXTENT, it does\nnot reset the length of the largest extent to 0 and update the inode\nfolio. Since modifications to the extent tree are disallowed afterward,\nthe cached largest extent may become stale. This can trigger the\nfollowing error in xfstests generic/388:\n\nF2FS-fs (dm-0): sanity_check_extent_cache: inode (ino=1761) extent info [220057, 57, 6] is incorrect, run fsck to fix\n\nIn the f2fs_drop_inode path, __destroy_extent_node() does not need to\nguarantee that et->node_cnt is 0, because concurrency with writeback\nis expected in this path, and writeback may update the extent cache.\n\nThis patch reverts commit ed78aeebef05 (\"f2fs: fix node_cnt race between\nextent node destroy and writeback\"), and remove the unnecessary zero\ncheck of et->node_cnt."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/f2fs/extent_cache.c"], "versions": [{"version": "42dd1c91f993431d0b399502479d00e6ad1bca71", "lessThan": "7e4d8f98be63f98856a5176b9188dada6e7ba9ee", "status": "affected", "versionType": "git"}, {"version": "ab1eaf9d5c99042f5b0243bf67a06283a4c0757f", "lessThan": "58a5deb220bcac4c73bf58954c0845644c997487", "status": "affected", "versionType": "git"}, {"version": "b0e4395870eb3441ddc959f6710b5f6ca61aff26", "lessThan": "20190e498057997532c7f186d081011f18e0a462", "status": "affected", "versionType": "git"}, {"version": "ed78aeebef05212ef7dca93bd931e4eff67c113f", "lessThan": "edf12cbeeeabe799bd2ee21fdb5c336cce6fbad7", "status": "affected", "versionType": "git"}, {"version": "ed78aeebef05212ef7dca93bd931e4eff67c113f", "lessThan": "1f70ddb28a3c71df124da5fa4040c808116d6bb9", "status": "affected", "versionType": "git"}, {"version": "0559a0e962aacbb47519e26ee663be04b72dcb92", "status": "affected", "versionType": "git"}, {"version": "6.6.140", "lessThan": "6.6.144", "status": "affected", "versionType": "semver"}, {"version": "6.12.88", "lessThan": "6.12.95", "status": "affected", "versionType": "semver"}, {"version": "6.18.30", "lessThan": "6.18.38", "status": "affected", "versionType": "semver"}, {"version": "7.0.7", "lessThan": "7.1", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/f2fs/extent_cache.c"], "versions": [{"version": "7.1", "status": "affected"}, {"version": "0", "lessThan": "7.1", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.144", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.95", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.38", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.3", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "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": "6.6.140", "versionEndExcluding": "6.6.144"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.88", "versionEndExcluding": "6.12.95"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.30", "versionEndExcluding": "6.18.38"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.1.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.2-rc1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0.7"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7e4d8f98be63f98856a5176b9188dada6e7ba9ee"}, {"url": "https://git.kernel.org/stable/c/58a5deb220bcac4c73bf58954c0845644c997487"}, {"url": "https://git.kernel.org/stable/c/20190e498057997532c7f186d081011f18e0a462"}, {"url": "https://git.kernel.org/stable/c/edf12cbeeeabe799bd2ee21fdb5c336cce6fbad7"}, {"url": "https://git.kernel.org/stable/c/1f70ddb28a3c71df124da5fa4040c808116d6bb9"}], "title": "f2fs: fix incorrect FI_NO_EXTENT handling in __destroy_extent_node()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: f2fs: fix incorrect FI_NO_EXTENT handling in __destroy_extent_node()", "id": "2502236", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502236"}, "csaw": false, "cwe": "CWE-821", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nf2fs: fix incorrect FI_NO_EXTENT handling in __destroy_extent_node()\nWhen __destroy_extent_node() sets the inode flag FI_NO_EXTENT, it does\nnot reset the length of the largest extent to 0 and update the inode\nfolio. Since modifications to the extent tree are disallowed afterward,\nthe cached largest extent may become stale. This can trigger the\nfollowing error in xfstests generic/388:\nF2FS-fs (dm-0): sanity_check_extent_cache: inode (ino=1761) extent info [220057, 57, 6] is incorrect, run fsck to fix\nIn the f2fs_drop_inode path, __destroy_extent_node() does not need to\nguarantee that et->node_cnt is 0, because concurrency with writeback\nis expected in this path, and writeback may update the extent cache.\nThis patch reverts commit ed78aeebef05 (\"f2fs: fix node_cnt race between\nextent node destroy and writeback\"), and remove the unnecessary zero\ncheck of et->node_cnt.", "A flaw was found in the Linux kernel's f2fs (Flash-Friendly File System). Incorrect handling of extent information during inode destruction can lead to a stale extent cache. This can result in data integrity issues or filesystem corruption, potentially requiring administrative intervention to repair."], "name": "CVE-2026-63812", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63812\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63812\nhttps://lore.kernel.org/linux-cve-announce/2026071903-CVE-2026-63812-93b5@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[42dd1c91f993431d0b399502479d00e6ad1bca71,7e4d8f98be63f98856a5176b9188dada6e7ba9ee)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ab1eaf9d5c99042f5b0243bf67a06283a4c0757f,58a5deb220bcac4c73bf58954c0845644c997487)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b0e4395870eb3441ddc959f6710b5f6ca61aff26,20190e498057997532c7f186d081011f18e0a462)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed78aeebef05212ef7dca93bd931e4eff67c113f,edf12cbeeeabe799bd2ee21fdb5c336cce6fbad7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed78aeebef05212ef7dca93bd931e4eff67c113f,1f70ddb28a3c71df124da5fa4040c808116d6bb9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "0559a0e962aacbb47519e26ee663be04b72dcb92"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.140,6.6.144)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.88,6.12.95)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.18.30,6.18.38)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.0.7,7.1)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "7.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,7.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.144,6.7.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.95,6.13.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.38,6.19.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.3,7.2.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-21T03:30:03.790509+00:00", "updated": "2026-07-21T03:30:03.790551+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}