CVE-2026-90261

CVE-2026-90261 affects the Linux kernel 's btrfs zoned filesystem . The vulnerability resides in btree_writepages() and the active block group pivot logic (btrfs_check_meta_write_pointer() ). During ascending-address writeback, if the active metadata block group sits at a higher logical address t...

EUVD-2026-81854

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: flush active metadata block group at btreewritepages start btreewritepages writes the btree inode's dirty metadata in ascending logical address order. On a zoned filesystem only one metadata and one system block gro...