GSD-2021-1001653 KVM: x86: Fix stack-out-of-bounds memory access from ioapic_write_indirect()
A stack-out-of-bounds memory access in the KVM x86 IOAPIC handler 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
- None listed
What is GSD-2021-1001653?
GSD-2021-1001653 is a memory corruption vulnerability in Kernel, published on 19 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
KVM: x86: Fix stack-out-of-bounds memory access from ioapic_write_indirect()
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 v5.10.71 by commit bebabb76ad9acca8858e0371e102fb60d708e25b, it was introduced in version v5.5 by commit 7ee30bc132c683d06a6d9e360e39e483e3990708. For more details please see the references link.
Which versions are affected by GSD-2021-1001653?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001653?
No fix has been published for GSD-2021-1001653 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-2021-1001653 being exploited?
There is no known exploitation of GSD-2021-1001653 in the wild and no public exploit code.