GSD-2021-1001874 mm, slub: fix mismatch between reconstructed freelist depth and cnt
A mismatch in the SLUB allocator's freelist depth and count can lead to memory corruption, potentially allowing local attackers to execute code or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1001874?
GSD-2021-1001874 is a memory corruption vulnerability in Kernel, published on 28 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
mm, slub: fix mismatch between reconstructed freelist depth and cnt
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 v5.14.15 by commit ec93d4a439c3a619b6682ba5778dc885d1460d3e, it was introduced in version v4.17 by commit c3895391df385c6628638f014c87e16f5e2efd45. For more details please see the references link.
Which versions are affected by GSD-2021-1001874?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001874?
No fix has been published for GSD-2021-1001874 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-2021-1001874 being exploited?
There is no known exploitation of GSD-2021-1001874 in the wild and no public exploit code.