CVE-2026-89642
CVE CVE-2026-89642EUVD EUVD-2026-76554Published 2026-09-11T19:45:34.000ZLast changed 2026-09-13T06:24:05.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: cifs: call pagecache_isize_extended() in cifs_setsize() when extending cifs_setsize() calls truncate_pagecache() but skips pagecache_isize_extended() on extension. truncate_setsize() shows the correct pattern: i_size_write(inode, newsize); if (newsize > oldsize) pagecache_isize_extended(inode, oldsize, newsize); truncate_pagecache(inode, newsize); pagecache_isize_extended() zeroes the tail of the page straddling old EOF. Without it, dirty bytes in that region can be written back to the server, exposing stale data in the newly extended range.
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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <12bafe32f09c0d24f5096154b59c347b9c6606e0; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c510edb9734af1c274d18f4f31a471a166bbc7e8; patch: 7.3-rc1; 2.6.12; patch: 7.2.4; patch: 0
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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