GSD-2021-1000340 mm: memcontrol: slab: fix obtain a reference to a freeing memcg
A use-after-free vulnerability in the Linux kernel memory control subsystem allows local attackers to potentially escalate privileges or cause a system crash.
- 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-2021-1000340?
GSD-2021-1000340 is an use after free vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
mm: memcontrol: slab: fix obtain a reference to a freeing memcg
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 v5.10.37 by commit 31df8bc4d3feca9f9c6b2cd06fd64a111ae1a0e6, it was introduced in version v5.10.11 by commit 26f54dac15640c65ec69867e182de7be708ea389. For more details please see the references link.
Which versions are affected by GSD-2021-1000340?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000340?
No fix has been published for GSD-2021-1000340 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2021-1000340 being exploited?
There is no known exploitation of GSD-2021-1000340 in the wild and no public exploit code.