CVE-2026-46080

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

ocfs2: split transactions in dio completion to avoid credit exhaustion

During ocfs2 dio operations, JBD2 may report warnings via following

call trace:

ocfs2_dio_end_io_write

ocfs2_mark_extent_written

ocfs2_change_extent_flag

ocfs2_split_extent

ocfs2_try_to_merge_extent

ocfs2_extend_rotate_transaction

ocfs2_extend_trans

jbd2__journal_restart

start_this_handle

output: JBD2: kworker/6:2 wants too many credits credits:5450 rsv_credits:0 max:5449

To prevent exceeding the credits limit, modify ocfs2_dio_end_io_write() to

handle extents in a batch of transaction.

Additionally, relocate ocfs2_del_inode_from_orphan(). The orphan inode

should only be removed from the orphan list after the extent tree update

is complete. This ensures that if a crash occurs in the middle of extent

tree updates, we won't leave stale blocks beyond EOF.

This patch also changes the logic for updating

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References