CVE-2026-80638
CVE CVE-2026-80638EUVD EUVD-2026-67514Published 2026-08-28T06:48:51.000ZLast changed 2026-08-29T06:21:38.000ZCVSS 8.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent [BUG] Unlinking a refcounted file whose refcount tree has leaf blocks triggers a fortify panic due to an out-of-bounds write. [CAUSE] When the last leaf block is removed from a refcount tree, ocfs2_remove_refcount_extent() converts the root back to leaf mode with a bulk memset on &rb->rf_records. rf_records sits in an anonymous union with rf_list. rf_list.l_tree_depth aliases rf_records.rl_count, and is 0 for a single-level tree. With rl_count equal to 0, the memset writes past the 16-byte declared size of rf_records, which the fortify checker catches. [FIX] Replace the bulk memset on &rb->rf_records with a correctly-bounded memset on rl_recs[] alone, after setting rl_count to the correct value.
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 6.19; patch: 0; 2f26f58df041bbcf692730ff4d8ab0f250d9670d <1ec3cca2d8b6b9ff6584ca626d4c8918bbf48d44; 2f26f58df041bbcf692730ff4d8ab0f250d9670d <f5255516ec7add3a6d5d37853ad5a9a9ddb14305; patch: 7.1.5; patch: 7.2
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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