CVE-2026-74572 - btrfs: zoned: fix deadlock between metadata writeback and transaction commit
Brief
CVE ID : CVE-2026-74572
Published : Aug. 15, 2026, 1:18 p. m.
- 7 hours, 48 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved:
btrfs: zoned: fix deadlock between metadata writeback and transaction commit
When writing out metadata extent buffers in a zoned filesystem, btree_writepages() holds fs_info-zoned_meta_io_lock across the whole writeback loop, including the call to btrfs_check_meta_write_pointer() - check_bg_is_active().
For the tree-log block group, check_bg_is_active() may fail to activate the zone and fall back to btrfs_zone_finish_one_bg() to free an active zone.