Answer in brief
CVE-2026-80644 records a Unknown severity vulnerability in ocfs2: don't BUG_ON an invalid journal dinode. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=10995aa2451afa20b721cc7de856cae1a13dba57 <bf1d59cf2ac8a1730607ebaa0bc0dc6d00f197d0 || >=10995aa2451afa20b721cc7de856cae1a13dba57 <86509c5296fe46ad6bcdd83931a53c2c6b7913a8 || >=10995aa2451afa20b721cc7de856cae1a13dba57 <12c32a7350b670aaaaf2e01583d8648ec0c9755c || >=10995aa2451afa20b721cc7de856cae1a13dba57 <b460f8d01a12061853d02c8fb693fb42450acd7d || >=10995aa2451afa20b721cc7de856cae1a13dba57 <a06eec15596e5801bad59ad16cd2bf4f0fa839a1 || >=10995aa2451afa20b721cc7de856cae1a13dba57 <3852478d34c7baa490ba9c7374ee901a56eea577 || >=10995aa2451afa20b721cc7de856cae1a13dba57 <5b33f99f3e48465bd93219495381a5aef4fa967f || >=10995aa2451afa20b721cc7de856cae1a13dba57 <c0438198c28b1d22c272751af5e717c11d9fa8dd | bf1d59cf2ac8a1730607ebaa0bc0dc6d00f197d0, 86509c5296fe46ad6bcdd83931a53c2c6b7913a8, 12c32a7350b670aaaaf2e01583d8648ec0c9755c, b460f8d01a12061853d02c8fb693fb42450acd7d, a06eec15596e5801bad59ad16cd2bf4f0fa839a1, 3852478d34c7baa490ba9c7374ee901a56eea577, 5b33f99f3e48465bd93219495381a5aef4fa967f, c0438198c28b1d22c272751af5e717c11d9fa8dd |
| Linux/Linuxgeneric | 2.6.29 | Not reported |
Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 28, 2026
In the Linux kernel, the following vulnerability has been resolved: ocfs2: don't BUG_ON an invalid journal dinode [BUG] A fuzzed OCFS2 image can corrupt the current slot journal dinode while mount is still in progress. The mount path first reports the invalid journal block and then crashes in shutdown: kernel BUG at fs/ocfs2/journal.c:1034! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI RIP: 0010:ocfs2_journal_toggle_dirty+0x2d6/0x340 fs/ocfs2/journal.c:1034 Call Trace: ocfs2_journal_shutdown+0x414/0xc30 fs/ocfs2/journal.c:1116 ocfs2_mount_volume fs/ocfs2/super.c:1785 [inline] ocfs2_fill_super+0x30a9/0x3cd0 fs/ocfs2/super.c:1083 get_tree_bdev_flags+0x38b/0x640 fs/super.c:1698 get_tree_bdev+0x24/0x40 fs/super.c:1721 ocfs2_get_tree+0x21/0x30 fs/ocfs2/super.c:1184 vfs_get_tree+0x9a/0x370 fs/super.c:1758 fc_mount fs/namespace.c:1199 [inline] do_new_mount_fc fs/namespace.c:3642 [inline] do_new_mount fs/namespace.c:3718 [inline] path_mount+0x5b8/0x1ea0 fs/namespace.c:4028 do_mount fs/namespace.c:4041 [inline] __do_sys_mount fs/namespace.c:4229 [inline] __se_sys_mount fs/namespace.c:4206 [inline] __x64_sys_mount+0x282/0x320 fs/namespace.c:4206 ... [CAUSE] ocfs2_journal_toggle_dirty() used to return -EIO when journal->j_bh no longer contained a valid dinode, because the startup and shutdown paths already handled that failure. Commit 10995aa2451a ("ocfs2: Morph the haphazard OCFS2_IS_VALID_DINODE() checks.") changed the check to a BUG_ON() under the assumption that the journal dinode had already been validated. That turns an unexpected invalid journal dinode during mount teardown into a kernel crash instead of a normal mount failure. [FIX] Replace the BUG_ON() with WARN_ON() and return -EIO. This keeps the invariant warning for debugging, but restores the original behavior of failing startup or shutdown cleanly instead of panicking the kernel.
Quoted source text, attributed separately from HOL analysis.