CVE-2026-80881
CVE CVE-2026-80881EUVD EUVD-2026-71511Published 2026-09-04T16:49:11.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix buffer head management in ocfs2_read_blocks() In ocfs2_read_blocks(), caller should't assume that buffer head returned by 'sb_getblk()' is exclusively owned and so 'put_bh()' always drops b_count from 1 to 0. If it is not so, buffer head remains on hold and likely to be returned by the next call to 'sb_getblk()' unchanged - that is, with BH_Uptodate bit set even if it has failed validation previously, thus allowing to insert that buffer head into OCFS2 metadata cache and submit it to upper layers. To avoid such a scenario, BH_Uptodate should be cleared immediately after 'validate()' callback has detected some data inconsistency.
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: 6.6.145; 4.4.204 <4.5; 4.9.204 <4.10; patch: 5.15.212; cf76c78595ca87548ca5e45c862ac9e0949c4687 <5927acb3e2c99985a14adecd9d1b67ba191c622d; 6c150df9c2e80b5cf86f5a0d98beb7390ad63bfc; patch: 6.12.97; 4.14.157 <4.15; cf76c78595ca87548ca5e45c862ac9e0949c4687 <0e389fc290c350c67591abf4c367119f4689f310; 65cbd1279f4b999d56a838344a30642db24cd215; 01f93d5e36753fc4d06ec67f05ce78c9c6f2dd56; cf76c78595ca87548ca5e45c862ac9e0949c4687 <6371a07148ee979af22a9d6f4c277462953a9a4a; 97e1db17bc1ef4c2e1789bc9323c7be44fba53f8; cf76c78595ca87548ca5e45c862ac9e0949c4687 <61f7a5acb3bf8fc97dad78f54b1e8d0e1c819766; patch: 7.2; patch: 6.1.178; cf76c78595ca87548ca5e45c862ac9e0949c4687 <9e7a057934cdd58e4cc94350bcfe5367bbee0f8e; cf76c78595ca87548ca5e45c862ac9e0949c4687 <4ab17e328522a4df5fe0f0dcf39098118b1feeaa; cf76c78595ca87548ca5e45c862ac9e0949c4687 <ecb3f9386f4353034caef77239473c627232db17; 4.19.87 <4.20; 4.20; patch: 0; cf76c78595ca87548ca5e45c862ac9e0949c4687 <a4eae1499c760949a93459d11390bd1fd823d31d; patch: 7.1.5; patch: 5.10.261; patch: 6.18.40
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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