Disclosure summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: take commit root semaphore when iterating in mark_block_group_to_copy() mark_block_group_to_copy() iterates over the commit root with skip_locking=true. A concurrent transaction commit can swap and free the commit root during iteration, causing use-after-free when accessing extent buffers. Fix it by using path->need_commit_sem to protect the commit root search.
Source-specific records & product guidance
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NIST National Vulnerability Database · NVD-CVE-2026-98245
Open original source · Updated Oct 06, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
Original records & references
PUBLISHED 2026-10-06T05:18:12-04:00
MODIFIED 2026-10-06T05:18:12-04:00
INGESTED 2026-10-06T11:45:53-04:00