CVE-2026-72106 dm-ioctl: fix a possible overflow in list_version_get_info
A buffer overflow in the Linux kernel dm-ioctl module allows local attackers to potentially execute code or escalate privileges.
- 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-2026-72106?
CVE-2026-72106 is a vulnerability in Linux, published on 15 Aug 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:
dm-ioctl: fix a possible overflow in list_version_get_info
sizeof(tt->version) is 12 bytes, but the code writes 16 bytes into the output buffer - info->vers->version[0], info->vers->version[1], info->vers->version[2] and info->vers->next. This can cause buffer overflow.
Fix this buffer overflow by replacing "sizeof(tt->version)" with "sizeof(struct dm_target_versions)".
Which versions are affected by CVE-2026-72106?
How do I fix CVE-2026-72106?
Apply the vendor's patch.
Is CVE-2026-72106 being exploited?
There is no known exploitation of CVE-2026-72106 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72106, DEBIAN-CVE-2026-72106, GHSA-cmm5-39xx-c83c, UBUNTU-CVE-2026-72106.