CVE-2026-72305 VDUSE: avoid leaking information to userspace
A local attacker can exploit unaligned bounce pages in the Linux kernel VDUSE driver to leak sensitive kernel memory information to userspace.
- 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-2026-72305?
CVE-2026-72305 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:
VDUSE: avoid leaking information to userspace
The bounceing is not necessarily page aligned, so current VDUSE can leak kernel information through mapping bounce pages to userspace. Allocate bounce pages with __GFP_ZERO to avoid leaking information to userspace.
Which versions are affected by CVE-2026-72305?
How do I fix CVE-2026-72305?
Apply the vendor's patch.
Is CVE-2026-72305 being exploited?
There is no known exploitation of CVE-2026-72305 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72305, DEBIAN-CVE-2026-72305, GHSA-j4px-38fv-h9g9, UBUNTU-CVE-2026-72305.