CVE-2026-43075

{"id": "CVE-2026-43075", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "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": "1afc32b952335f665327a1a9001ba1b44bb76fd9", "lessThan": "68f9cc3bbf2ae501770cea7dc0005fc9a85e48ea", "versionType": "git"}, {"status": "affected", "version": "1afc32b952335f665327a1a9001ba1b44bb76fd9", "lessThan": "2e6a254f9cedf51b75cc20b8b92e2209bfa04c3e", "versionType": "git"}, {"status": "affected", "version": "1afc32b952335f665327a1a9001ba1b44bb76fd9", "lessThan": "22df7d4de9c5cd42edf855a1de25f2106088c4c6", "versionType": "git"}, {"status": "affected", "version": "1afc32b952335f665327a1a9001ba1b44bb76fd9", "lessThan": "e2c9dc6b6e96f3585f2a1062ca3374a52db0938f", "versionType": "git"}, {"status": "affected", "version": "1afc32b952335f665327a1a9001ba1b44bb76fd9", "lessThan": "947f953978b0d9463498d548d0f054f5a75be2e9", "versionType": "git"}, {"status": "affected", "version": "1afc32b952335f665327a1a9001ba1b44bb76fd9", "lessThan": "0c1af902223b6fcedb60904ca0b551254686c7b9", "versionType": "git"}, {"status": "affected", "version": "1afc32b952335f665327a1a9001ba1b44bb76fd9", "lessThan": "69d3c69ade1e4285ab4ca48fe7acee0767e65604", "versionType": "git"}, {"status": "affected", "version": "1afc32b952335f665327a1a9001ba1b44bb76fd9", "lessThan": "7bc5da4842bed3252d26e742213741a4d0ac1b14", "versionType": "git"}], "programFiles": ["fs/ocfs2/inode.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.24"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.24", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.258", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.209", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.136", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.83", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.24", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.14", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/ocfs2/inode.c"], "defaultStatus": "affected"}]}], "published": "2026-05-06T10:16:20.463", "references": [{"url": "https://git.kernel.org/stable/c/0c1af902223b6fcedb60904ca0b551254686c7b9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/22df7d4de9c5cd42edf855a1de25f2106088c4c6", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2e6a254f9cedf51b75cc20b8b92e2209bfa04c3e", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/68f9cc3bbf2ae501770cea7dc0005fc9a85e48ea", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/69d3c69ade1e4285ab4ca48fe7acee0767e65604", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7bc5da4842bed3252d26e742213741a4d0ac1b14", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/947f953978b0d9463498d548d0f054f5a75be2e9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e2c9dc6b6e96f3585f2a1062ca3374a52db0938f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix out-of-bounds write in ocfs2_write_end_inline\n\nKASAN reports a use-after-free write of 4086 bytes in\nocfs2_write_end_inline, called from ocfs2_write_end_nolock during a\ncopy_file_range splice fallback on a corrupted ocfs2 filesystem mounted on\na loop device. The actual bug is an out-of-bounds write past the inode\nblock buffer, not a true use-after-free. The write overflows into an\nadjacent freed page, which KASAN reports as UAF.\n\nThe root cause is that ocfs2_try_to_write_inline_data trusts the on-disk\nid_count field to determine whether a write fits in inline data. On a\ncorrupted filesystem, id_count can exceed the physical maximum inline data\ncapacity, causing writes to overflow the inode block buffer.\n\nCall trace (crash path):\n\n vfs_copy_file_range (fs/read_write.c:1634)\n do_splice_direct\n splice_direct_to_actor\n iter_file_splice_write\n ocfs2_file_write_iter\n generic_perform_write\n ocfs2_write_end\n ocfs2_write_end_nolock (fs/ocfs2/aops.c:1949)\n ocfs2_write_end_inline (fs/ocfs2/aops.c:1915)\n memcpy_from_folio <-- KASAN: write OOB\n\nSo add id_count upper bound check in ocfs2_validate_inode_block() to\nalongside the existing i_size check to fix it."}], "lastModified": "2026-06-17T10:48:53.263", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C45350C-5A79-40F0-B6B0-BF9ED7FA81B4", "versionEndExcluding": "6.6.136", "versionStartIncluding": "2.6.24.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F0AE5B5-23AC-4DCC-B37A-51CA1DAE7BA8", "versionEndExcluding": "6.12.83", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8126B8B8-6D0B-4443-86C1-672AEE893555", "versionEndExcluding": "6.18.24", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D6A8A074-BBF4-4803-ABED-519A839435BB", "versionEndExcluding": "6.19.14", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.24:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6F3E61F3-1CF1-4176-94CD-89A408BCFC96"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}