CVE-2026-31410 ksmbd: use volume UUID in FS_OBJECT_ID_INFORMATION
The Linux kernel ksmbd module incorrectly handles volume identifiers, potentially allowing attackers to read sensitive filesystem metadata.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-31410?
CVE-2026-31410 is a medium-severity vulnerability in Linux kernel, published on 6 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: use volume UUID in FS_OBJECT_ID_INFORMATION
Use sb->s_uuid for a proper volume identifier as the primary choice. For filesystems that do not provide a UUID, fall back to stfs.f_fsid obtained from vfs_statfs().
Which versions are affected by CVE-2026-31410?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-31410?
Apply the vendor's patch.
Is CVE-2026-31410 being exploited?
There is no known exploitation of CVE-2026-31410 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-31410, DEBIAN-CVE-2026-31410, GHSA-5hjj-hhq3-52wj, ROOT-OS-DEBIAN-11-CVE-2026-31410, ROOT-OS-DEBIAN-12-CVE-2026-31410, ROOT-OS-DEBIAN-13-CVE-2026-31410 and 3 more.