CVE-2026-46174 x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
Attackers can exploit improper resource isolation in AMD Zen2 op cache to cause instruction corruption, potentially leading to code execution.
- 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-2026-46174?
CVE-2026-46174 is a high-severity vulnerability in Linux kernel, published on 28 May 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:
x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
Make sure resources are not improperly shared in the op cache and cause instruction corruption this way.
Weakness: CWE-862
Which versions are affected by CVE-2026-46174?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46174?
Apply the vendor's patch.
Is CVE-2026-46174 being exploited?
There is no known exploitation of CVE-2026-46174 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-88962, BELL-CVE-2026-46174, DEBIAN-CVE-2026-46174, GHSA-xgq6-gg2m-2x7g, ROOT-OS-DEBIAN-11-CVE-2026-46174, ROOT-OS-UBUNTU-2204-CVE-2026-46174 and 2 more.