CVE-2026-89640 | Linux Kernel up to 6.12.108/6.18.49/7.2.3 cifs cifs_remap_file_range toctou

A vulnerability was found in Linux Kernel up to 6.12.108/6.18.49/7.2.3. It has been classified as very critical. The impacted element is the function cifs_remap_file_range of the component cifs. Performing a manipulation results in time-of-check time-of-use.

This vulnerability is identified as CVE-2026-89640. The attack can be initiated remotely. There is not any exploit available.

Upgrading the affected component is recommended.VulDB Recent EntriesRead More