CVE-2026-98082btrfs: fix the possible bioc_list memory leak during error
Updated under an hour ago ()
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from ab69bf6f8970c09d3735c25094e9471d54365282 before d043c43d2b4ebcd75ee7f907948ef2847306d6b2; from 02c372e1f016e5113217597ab37b399c4e407477 before 83f0c973cffb184d019390ffdb5d31de5c85bc61; 02c372e1f016e5113217597ab37b399c4e407477 builds before 1b4d4e890c2c85d0f6365b5a08c48b4bbf85deb0; from 02c372e1f016e5113217597ab37b399c4e407477 before bb4da45766d16503821f167054db76b735d89e94; from 02c372e1f016e5113217597ab37b399c4e407477 before afbe73778338e6d1ac8c4486fbdf33f0cc1f2624; from 6.6.130 before 6.6.158 | CNA record |
linux linux_kernel linux:linux_kernel | from 6.6.130 before 6.6.158; from 6.7 before 6.12.111; from 6.13 before 6.18.53; from 6.19 before 7.2.7; 7.3 | NVD |
References
- https://git.kernel.org/stable/c/d043c43d2b4ebcd75ee7f907948ef2847306d6b2patch
- https://git.kernel.org/stable/c/83f0c973cffb184d019390ffdb5d31de5c85bc61patch
- https://git.kernel.org/stable/c/1b4d4e890c2c85d0f6365b5a08c48b4bbf85deb0patch
- https://git.kernel.org/stable/c/bb4da45766d16503821f167054db76b735d89e94patch
- https://git.kernel.org/stable/c/afbe73778338e6d1ac8c4486fbdf33f0cc1f2624patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.