{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43076", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.983Z", "datePublished": "2026-05-06T07:40:13.634Z", "dateUpdated": "2026-05-06T07:40:13.634Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-06T07:40:13.634Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: validate inline data i_size during inode read\n\nWhen reading an inode from disk, ocfs2_validate_inode_block() performs\nvarious sanity checks but does not validate the size of inline data. If\nthe filesystem is corrupted, an inode's i_size can exceed the actual\ninline data capacity (id_count).\n\nThis causes ocfs2_dir_foreach_blk_id() to iterate beyond the inline data\nbuffer, triggering a use-after-free when accessing directory entries from\nfreed memory.\n\nIn the syzbot report:\n - i_size was 1099511627576 bytes (~1TB)\n - Actual inline data capacity (id_count) is typically <256 bytes\n - A garbage rec_len (54648) caused ctx->pos to jump out of bounds\n - This triggered a UAF in ocfs2_check_dir_entry()\n\nFix by adding a validation check in ocfs2_validate_inode_block() to ensure\ninodes with inline data have i_size <= id_count. This catches the\ncorruption early during inode read and prevents all downstream code from\noperating on invalid data."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ocfs2/inode.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "37f074e65f24f10f8d8df224a572e4cb9e6faf63", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c1de19e891be3bfb3e1d0c7cf07bbb8fb3b77c1b", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "cd2d765aa7157f852999842af32148128c735d39", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "77d0295725109d77f5854ef5b58c0d06c08168cc", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "1524af3685b35feac76662cc551cbc37bd14775f", "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/ocfs2/inode.c"], "versions": [{"version": "6.6.136", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.83", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.24", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.14", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.6.136"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.12.83"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.18.24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.19.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/37f074e65f24f10f8d8df224a572e4cb9e6faf63"}, {"url": "https://git.kernel.org/stable/c/c1de19e891be3bfb3e1d0c7cf07bbb8fb3b77c1b"}, {"url": "https://git.kernel.org/stable/c/cd2d765aa7157f852999842af32148128c735d39"}, {"url": "https://git.kernel.org/stable/c/77d0295725109d77f5854ef5b58c0d06c08168cc"}, {"url": "https://git.kernel.org/stable/c/1524af3685b35feac76662cc551cbc37bd14775f"}], "title": "ocfs2: validate inline data i_size during inode read", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: validate inline data i_size during inode read\n\nWhen reading an inode from disk, ocfs2_validate_inode_block() performs\nvarious sanity checks but does not validate the size of inline data. If\nthe filesystem is corrupted, an inode's i_size can exceed the actual\ninline data capacity (id_count).\n\nThis causes ocfs2_dir_foreach_blk_id() to iterate beyond the inline data\nbuffer, triggering a use-after-free when accessing directory entries from\nfreed memory.\n\nIn the syzbot report:\n - i_size was 1099511627576 bytes (~1TB)\n - Actual inline data capacity (id_count) is typically <256 bytes\n - A garbage rec_len (54648) caused ctx->pos to jump out of bounds\n - This triggered a UAF in ocfs2_check_dir_entry()\n\nFix by adding a validation check in ocfs2_validate_inode_block() to ensure\ninodes with inline data have i_size <= id_count. This catches the\ncorruption early during inode read and prevents all downstream code from\noperating on invalid data."}], "id": "CVE-2026-43076", "lastModified": "2026-05-06T10:16:20.590", "metrics": {}, "published": "2026-05-06T10:16:20.590", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1524af3685b35feac76662cc551cbc37bd14775f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/37f074e65f24f10f8d8df224a572e4cb9e6faf63"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/77d0295725109d77f5854ef5b58c0d06c08168cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c1de19e891be3bfb3e1d0c7cf07bbb8fb3b77c1b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cd2d765aa7157f852999842af32148128c735d39"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,37f074e65f24f10f8d8df224a572e4cb9e6faf63)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,c1de19e891be3bfb3e1d0c7cf07bbb8fb3b77c1b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,cd2d765aa7157f852999842af32148128c735d39)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,77d0295725109d77f5854ef5b58c0d06c08168cc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,1524af3685b35feac76662cc551cbc37bd14775f)"}}], "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": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.136,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.83,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.24,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.14,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "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": "2026-05-06T11:30:26.608567+00:00", "updated": "2026-05-06T13:30:04.437517+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416", "CWE-119"]}