← CVE Intelligence

CVE-2026-98082

btrfs: fix the possible bioc_list memory leak during error PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix the possible bioc_list memory leak during error There are two possible ways to leak bioc memory on btrfs_ordered_extent::bioc_list: - An error occurred for btrfs_insert_one_raid_extent() Then the function btrfs_insert_raid_extent() immediately return without freeing any bioc in the bioc_list. - An ordered extent hit an IO error In that case the ordered extent will have BTRFS_ORDERED_IOERR set, and skip the call on btrfs_insert_raid_extent() completely. Fix the problem by: - Introduce a new helper, btrfs_cleanup_ordered_bioc_list() Which will remove all bioc from the bioc_list, and release the bioc. - Call the above helper for btrfs_insert_raid_extent() So that the cleanup helper is always called no matter what. - Call the above helper for btrfs_finish_one_ordered() This is called just before the final release on the ordered extent. This was reported by Sashiko when reviewing another patch.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected ab69bf6f8970c09d3735c25094e9471d54365282 before d043c43d2b4ebcd75ee7f907948ef2847306d6b2; affected 02c372e1f016e5113217597ab37b399c4e407477 before 83f0c973cffb184d019390ffdb5d31de5c85bc61; affected 02c372e1f016e5113217597ab37b399c4e407477 before 1b4d4e890c2c85d0f6365b5a08c48b4bbf85deb0; affected 02c372e1f016e5113217597ab37b399c4e407477 before bb4da45766d16503821f167054db76b735d89e94; affected 02c372e1f016e5113217597ab37b399c4e407477 before afbe73778338e6d1ac8c4486fbdf33f0cc1f2624; affected 6.6.130 before 6.6.158
Linux / Linuxaffected 6.7; unaffected 0 before 6.7; unaffected 6.6.158 through 6.6.*; unaffected 6.12.111 through 6.12.*; unaffected 6.18.53 through 6.18.*; unaffected 7.2.7 through 7.2.*; unaffected 7.3 through *

CWE

No CWE identifiers supplied.

References