GSD-2021-1002198 cgroup: Fix memory leak caused by missing cgroup_bpf_offline
A memory leak in the Linux kernel cgroup BPF subsystem allows local attackers to cause 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-2021-1002198?
GSD-2021-1002198 is a memory corruption vulnerability in Kernel, published on 14 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
cgroup: Fix memory leak caused by missing cgroup_bpf_offline
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 v5.15 by commit 04f8ef5643bcd8bcde25dfdebef998aea480b2ba, it was introduced in version v5.10 by commit 2b0d3d3e4fcfb19d10f9a82910b8f0f05c56ee3e. For more details please see the references link.
Which versions are affected by GSD-2021-1002198?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002198?
No fix has been published for GSD-2021-1002198 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-2021-1002198 being exploited?
There is no known exploitation of GSD-2021-1002198 in the wild and no public exploit code.