{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-80644", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80644", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-08-28T06:48:55.076Z", "updatedAt": "2026-08-28T06:48:55.076Z", "importedAt": "2026-10-24T01:58:30.346Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "ocfs2: don't BUG_ON an invalid journal dinode", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: don't BUG_ON an invalid journal dinode\n\n[BUG]\nA fuzzed OCFS2 image can corrupt the current slot journal dinode while\nmount is still in progress. The mount path first reports the invalid\njournal block and then crashes in shutdown:\n\nkernel BUG at fs/ocfs2/journal.c:1034!\nOops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\nRIP: 0010:ocfs2_journal_toggle_dirty+0x2d6/0x340 fs/ocfs2/journal.c:1034\nCall Trace:\n ocfs2_journal_shutdown+0x414/0xc30 fs/ocfs2/journal.c:1116\n ocfs2_mount_volume fs/ocfs2/super.c:1785 [inline]\n ocfs2_fill_super+0x30a9/0x3cd0 fs/ocfs2/super.c:1083\n get_tree_bdev_flags+0x38b/0x640 fs/super.c:1698\n get_tree_bdev+0x24/0x40 fs/super.c:1721\n ocfs2_get_tree+0x21/0x30 fs/ocfs2/super.c:1184\n vfs_get_tree+0x9a/0x370 fs/super.c:1758\n fc_mount fs/namespace.c:1199 [inline]\n do_new_mount_fc fs/namespace.c:3642 [inline]\n do_new_mount fs/namespace.c:3718 [inline]\n path_mount+0x5b8/0x1ea0 fs/namespace.c:4028\n do_mount fs/namespace.c:4041 [inline]\n __do_sys_mount fs/namespace.c:4229 [inline]\n __se_sys_mount fs/namespace.c:4206 [inline]\n __x64_sys_mount+0x282/0x320 fs/namespace.c:4206\n ...\n\n[CAUSE]\nocfs2_journal_toggle_dirty() used to return -EIO when journal->j_bh no\nlonger contained a valid dinode, because the startup and shutdown paths\nalready handled that failure. Commit 10995aa2451a\n(\"ocfs2: Morph the haphazard OCFS2_IS_VALID_DINODE() checks.\") changed\nthe check to a BUG_ON() under the assumption that the journal dinode had\nalready been validated. That turns an unexpected invalid journal dinode\nduring mount teardown into a kernel crash instead of a normal mount\nfailure.\n\n[FIX]\nReplace the BUG_ON() with WARN_ON() and return -EIO. This keeps the\ninvariant warning for debugging, but restores the original behavior of\nfailing startup or shutdown cleanly instead of panicking the kernel.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "10995aa2451afa20b721cc7de856cae1a13dba57", "status": "affected", "versionType": "git", "lessThan": "bf1d59cf2ac8a1730607ebaa0bc0dc6d00f197d0" }, { "version": "10995aa2451afa20b721cc7de856cae1a13dba57", "status": "affected", "versionType": "git", "lessThan": "86509c5296fe46ad6bcdd83931a53c2c6b7913a8" }, { "version": "10995aa2451afa20b721cc7de856cae1a13dba57", "status": "affected", "versionType": "git", "lessThan": "12c32a7350b670aaaaf2e01583d8648ec0c9755c" }, { "version": "10995aa2451afa20b721cc7de856cae1a13dba57", "status": "affected", "versionType": "git", "lessThan": "b460f8d01a12061853d02c8fb693fb42450acd7d" }, { "version": "10995aa2451afa20b721cc7de856cae1a13dba57", "status": "affected", "versionType": "git", "lessThan": "a06eec15596e5801bad59ad16cd2bf4f0fa839a1" }, { "version": "10995aa2451afa20b721cc7de856cae1a13dba57", "status": "affected", "versionType": "git", "lessThan": "3852478d34c7baa490ba9c7374ee901a56eea577" }, { "version": "10995aa2451afa20b721cc7de856cae1a13dba57", "status": "affected", "versionType": "git", "lessThan": "5b33f99f3e48465bd93219495381a5aef4fa967f" }, { "version": "10995aa2451afa20b721cc7de856cae1a13dba57", "status": "affected", "versionType": "git", "lessThan": "c0438198c28b1d22c272751af5e717c11d9fa8dd" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.29", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.29" }, { "version": "5.10.261", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.212", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.178", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.145", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.97", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.40", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "7.1.5", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.1.*" }, { "version": "7.2", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }