CVE-2026-89631 | Linux Kernel up to 6.18.50/7.2.3 SMB client /proc/fs/cifs/DebugData CIFSTCon nativeFileSystem memory corruption

September 12, 2026 Yanac

A vulnerability classified as critical was found in Linux Kernel up to 6.18.50/7.2.3. This affects the function CIFSTCon of the file /proc/fs/cifs/DebugData of the component SMB client. Executing a manipulation of the argument nativeFileSystem can lead to memory corruption.

This vulnerability is handled as CVE-2026-89631. The attack can be executed remotely. There is not any exploit available.

Upgrading the affected component is advised.VulDB Recent EntriesRead More