CVE-2026-64187None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: xfs: fail recovery on a committed log item with no regions If the first op of a transaction is a bare transaction header (len == sizeof(struct xfs_trans_header)), xlog…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
xfs: fail recovery on a committed log item with no regions
If the first op of a transaction is a bare transaction header (len == sizeof(struct xfs_trans_header)), xlog_recover_add_to_trans() adds an item but no region, leaving it on r_itemq with ri_cnt == 0 and ri_buf == NULL.
The header can be split across op records, so later ops may still add regions; the item is only invalid if the transaction commits with none. The runtime commit path never emits such a transaction, so this only happens on a crafted log. It came from an AI-assisted code audit of the recovery parser.
xlog_recover_reorder_trans() calls ITEM_TYPE() on the item, which reads *(unsigned short *)item->ri_buf[0].iov_base and faults on the NULL ri_buf. Reject it there, before the commit handlers that also read ri_buf[0].
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:xlog_recover_reorder_trans (fs/xfs/xfs_log_recover.c:1836) xlog_recover_commit_trans (fs/xfs/xfs_log_recover.c:2043) xlog_recover_process_data (fs/xfs/xfs_log_recover.c:2501) xlog_do_recovery_pass (fs/xfs/xfs_log_recover.c:3244) xlog_recover (fs/xfs/xfs_log_recover.c:3493) xfs_log_mount (fs/xfs/xfs_log.c:618) xfs_mountfs (fs/xfs/xfs_mount.c:1034) xfs_fs_fill_super (fs/xfs/xfs_super.c:1938) vfs_get_tree (fs/super.c:1695) path_mount (fs/namespace.c:4161) __x64_sys_mount (fs/namespace.c:4367)
Linux >= 89cebc8477290b152618ffa110bbeae340d50900 < 5105426424ad6981db827cc1ada835a488fab035Linux >= 89cebc8477290b152618ffa110bbeae340d50900 < 226a3c8bea7163c39fe0a1c0ffc7ab7410ef3ba4Linux >= 89cebc8477290b152618ffa110bbeae340d50900 < d0ae7ec3aa61db5140b107f0a63e017f63e56a96Linux >= 89cebc8477290b152618ffa110bbeae340d50900 < d50b1fd066d66ceb548ba43e332cfe8a47e5e55aLinux >= 89cebc8477290b152618ffa110bbeae340d50900 < d98f22d2e11e0a36493aeb25b2933571ee90d9a4Linux >= 89cebc8477290b152618ffa110bbeae340d50900 < cccbabeb9a18fcb978d76d6047f2b59214aa7749Linux >= 89cebc8477290b152618ffa110bbeae340d50900 < 2094dab19d45c487285617b7b68913d0cc0c1211Linux 4.3Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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