GSD-2021-1000999 KVM: X86: Fix x86_emulator slab cache leak
A memory leak in the KVM x86 emulator allows local attackers to exhaust kernel memory, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000999?
GSD-2021-1000999 is a memory corruption vulnerability in Kernel, published on 30 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
KVM: X86: Fix x86_emulator slab cache leak
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.46 by commit 3a9934d6b8dd8a91d61ed2d0d538fa27cb9192a3, it was introduced in version v5.7 by commit c9b8b07cded58c55ad2bf67e68b9bfae96092293. For more details please see the references link.
Which versions are affected by GSD-2021-1000999?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000999?
No fix has been published for GSD-2021-1000999 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2021-1000999 being exploited?
There is no known exploitation of GSD-2021-1000999 in the wild and no public exploit code.