CVE-2026-98082

CVE CVE-2026-98082EUVD EUVD-2026-86912Published 2026-09-25T10:24:18.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 6.18.53; 6.6.130 <6.7; 02c372e1f016e5113217597ab37b399c4e407477 <83f0c973cffb184d019390ffdb5d31de5c85bc61; patch: 6.12.111; patch: 7.3-rc2; 02c372e1f016e5113217597ab37b399c4e407477 <bb4da45766d16503821f167054db76b735d89e94; ab69bf6f8970c09d3735c25094e9471d54365282; 02c372e1f016e5113217597ab37b399c4e407477 <afbe73778338e6d1ac8c4486fbdf33f0cc1f2624; patch: 0; 02c372e1f016e5113217597ab37b399c4e407477 <1b4d4e890c2c85d0f6365b5a08c48b4bbf85deb0; patch: 7.2.7; 6.7

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Carried in the product catalogue

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Linux — Linux

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