CVE-2026-89642
In the Linux kernel, the following vulnerability has been resolved: cifs: call pagecache_isize_extended() in cifs_setsize() when extending cifs_setsize() calls…
Impact
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.
Affected packages
This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/12bafe32f09c0d24f5096154b59c347b9c6606e0
- https://git.kernel.org/stable/c/40c16040783abcc240bd1b453e679ea6ca30e19e
- https://git.kernel.org/stable/c/5463d96cd2e46064ceefcf861b028745a4f4c373
- https://git.kernel.org/stable/c/880e1b5883a5d78d916fa446791c48f28a16719b
- https://git.kernel.org/stable/c/c510edb9734af1c274d18f4f31a471a166bbc7e8
- https://git.kernel.org/stable/c/e1f692b6da3e632a25d0b3a99f833bb609bae1a3