CVE-2026-74308

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74308", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.883Z", "datePublished": "2026-08-15T05:58:08.682Z", "dateUpdated": "2026-10-30T12:29:41.200Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:29:41.200Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix kernel BUG in ext4_write_inline_data_end\n\nWhen the data=journal mount option is used, the ext4_journalled_write_end()\nfunction incorrectly calls ext4_write_inline_data_end() without checking\nif the EXT4_STATE_MAY_INLINE_DATA flag is still set on the inode.\n\nIf a previous attempt to convert the inline data to an extent failed (e.g.\ndue to ENOSPC), the EXT4_STATE_MAY_INLINE_DATA flag is cleared, but\nthe EXT4_INODE_INLINE_DATA flag remains set. In this scenario, the next\ncall to ext4_write_begin() will not prepare the inline data xattr for\nwriting, but ext4_journalled_write_end() will incorrectly attempt to write\nto it, triggering a BUG_ON(pos + len > EXT4_I(inode)->i_inline_size) in\next4_write_inline_data() since i_inline_size was not expanded.\n\nFix this by ensuring that ext4_journalled_write_end() only calls\next4_write_inline_data_end() if the EXT4_STATE_MAY_INLINE_DATA flag is\nset, mirroring the behavior of ext4_write_end() and ext4_da_write_end()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/inode.c"], "versions": [{"version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "lessThan": "13db1ccae4d38f6d9296ee74aa1d39b429959ddb", "status": "affected", "versionType": "git"}, {"version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "lessThan": "260830a9a706f5d335398236fc788ce32f220de1", "status": "affected", "versionType": "git"}, {"version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "lessThan": "9808ae9fae996afa942bd963a39c9b1cdeebd0bd", "status": "affected", "versionType": "git"}, {"version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "lessThan": "f00f5c0dd55319bc33b76f72c853bda0e0a32eda", "status": "affected", "versionType": "git"}, {"version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "lessThan": "0ae42b51607240990614e0843f0d3529aaff62cc", "status": "affected", "versionType": "git"}, {"version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "lessThan": "ad09aa45965d3fafaf9963bc78109b73c0f9ac8d", "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/ext4/inode.c"], "versions": [{"version": "3.8", "status": "affected"}, {"version": "0", "lessThan": "3.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "3.8", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/13db1ccae4d38f6d9296ee74aa1d39b429959ddb"}, {"url": "https://git.kernel.org/stable/c/260830a9a706f5d335398236fc788ce32f220de1"}, {"url": "https://git.kernel.org/stable/c/9808ae9fae996afa942bd963a39c9b1cdeebd0bd"}, {"url": "https://git.kernel.org/stable/c/f00f5c0dd55319bc33b76f72c853bda0e0a32eda"}, {"url": "https://git.kernel.org/stable/c/0ae42b51607240990614e0843f0d3529aaff62cc"}, {"url": "https://git.kernel.org/stable/c/ad09aa45965d3fafaf9963bc78109b73c0f9ac8d"}], "title": "ext4: fix kernel BUG in ext4_write_inline_data_end", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/ext4/inode.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "13db1ccae4d38f6d9296ee74aa1d39b429959ddb", "status": "affected", "version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "versionType": "git"}, {"lessThan": "260830a9a706f5d335398236fc788ce32f220de1", "status": "affected", "version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "versionType": "git"}, {"lessThan": "9808ae9fae996afa942bd963a39c9b1cdeebd0bd", "status": "affected", "version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "versionType": "git"}, {"lessThan": "f00f5c0dd55319bc33b76f72c853bda0e0a32eda", "status": "affected", "version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "versionType": "git"}, {"lessThan": "0ae42b51607240990614e0843f0d3529aaff62cc", "status": "affected", "version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "versionType": "git"}, {"lessThan": "ad09aa45965d3fafaf9963bc78109b73c0f9ac8d", "status": "affected", "version": "3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/ext4/inode.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.8"}, {"lessThan": "3.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix kernel BUG in ext4_write_inline_data_end\n\nWhen the data=journal mount option is used, the ext4_journalled_write_end()\nfunction incorrectly calls ext4_write_inline_data_end() without checking\nif the EXT4_STATE_MAY_INLINE_DATA flag is still set on the inode.\n\nIf a previous attempt to convert the inline data to an extent failed (e.g.\ndue to ENOSPC), the EXT4_STATE_MAY_INLINE_DATA flag is cleared, but\nthe EXT4_INODE_INLINE_DATA flag remains set. In this scenario, the next\ncall to ext4_write_begin() will not prepare the inline data xattr for\nwriting, but ext4_journalled_write_end() will incorrectly attempt to write\nto it, triggering a BUG_ON(pos + len > EXT4_I(inode)->i_inline_size) in\next4_write_inline_data() since i_inline_size was not expanded.\n\nFix this by ensuring that ext4_journalled_write_end() only calls\next4_write_inline_data_end() if the EXT4_STATE_MAY_INLINE_DATA flag is\nset, mirroring the behavior of ext4_write_end() and ext4_da_write_end()."}], "id": "CVE-2026-74308", "lastModified": "2026-10-30T13:19:54.820", "metrics": {}, "published": "2026-08-15T06:22:30.653", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0ae42b51607240990614e0843f0d3529aaff62cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/13db1ccae4d38f6d9296ee74aa1d39b429959ddb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/260830a9a706f5d335398236fc788ce32f220de1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9808ae9fae996afa942bd963a39c9b1cdeebd0bd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ad09aa45965d3fafaf9963bc78109b73c0f9ac8d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f00f5c0dd55319bc33b76f72c853bda0e0a32eda"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: ext4: fix kernel BUG in ext4_write_inline_data_end", "id": "2516927", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516927"}, "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-805", "details": ["In the Linux kernel, the following vulnerability has been resolved:\next4: fix kernel BUG in ext4_write_inline_data_end\nWhen the data=journal mount option is used, the ext4_journalled_write_end()\nfunction incorrectly calls ext4_write_inline_data_end() without checking\nif the EXT4_STATE_MAY_INLINE_DATA flag is still set on the inode.\nIf a previous attempt to convert the inline data to an extent failed (e.g.\ndue to ENOSPC), the EXT4_STATE_MAY_INLINE_DATA flag is cleared, but\nthe EXT4_INODE_INLINE_DATA flag remains set. In this scenario, the next\ncall to ext4_write_begin() will not prepare the inline data xattr for\nwriting, but ext4_journalled_write_end() will incorrectly attempt to write\nto it, triggering a BUG_ON(pos + len > EXT4_I(inode)->i_inline_size) in\next4_write_inline_data() since i_inline_size was not expanded.\nFix this by ensuring that ext4_journalled_write_end() only calls\next4_write_inline_data_end() if the EXT4_STATE_MAY_INLINE_DATA flag is\nset, mirroring the behavior of ext4_write_end() and ext4_da_write_end().", "A flaw was found in the Linux kernel's ext4 filesystem. When the `data=journal` mount option is enabled, the `ext4_journalled_write_end()` function can incorrectly attempt to write inline data. This occurs if a prior attempt to convert inline data to an extent failed, leading to an inconsistent state. An attacker with local access could exploit this to trigger a kernel bug, resulting in a system crash and a Denial of Service (DoS)."], "name": "CVE-2026-74308", "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": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74308\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74308\nhttps://lore.kernel.org/linux-cve-announce/2026081551-CVE-2026-74308-60a2@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb,260830a9a706f5d335398236fc788ce32f220de1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb,9808ae9fae996afa942bd963a39c9b1cdeebd0bd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb,f00f5c0dd55319bc33b76f72c853bda0e0a32eda)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb,0ae42b51607240990614e0843f0d3529aaff62cc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3fdcfb668fd78ec92d9bc2daddf1d41e2a8a30bb,ad09aa45965d3fafaf9963bc78109b73c0f9ac8d)"}}], "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": "generic", "value": "3.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "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": "2026-08-15T12:30:07.842105+00:00", "updated": "2026-08-22T00:45:05.365457+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-252", "CWE-703", "CWE-805"]}