CVE-2026-89910 LoongArch: KVM: Fix uninitialized stack variable issue with dmsintc
An uninitialized stack variable in the LoongArch KVM module may allow attackers to read sensitive kernel memory.
- 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-2026-89910?
CVE-2026-89910 is a high-severity vulnerability in Linux, published on 16 Sep 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:
LoongArch: KVM: Fix uninitialized stack variable issue with dmsintc
Variable vector[] is declared on stack in function dmsintc_inject_irq() and sometimes it is used without initialized. Here fix this issue.
Which versions are affected by CVE-2026-89910?
How do I fix CVE-2026-89910?
Apply the vendor's patch.
Is CVE-2026-89910 being exploited?
There is no known exploitation of CVE-2026-89910 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-89910, GHSA-vj69-mp8q-cfj8, UBUNTU-CVE-2026-89910.