GSD-2021-1002265 perf bpf: Avoid memory leak from perf_env__insert_btf()
A memory leak in the Linux kernel perf BPF subsystem can lead to resource exhaustion and 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-2021-1002265?
GSD-2021-1002265 is a memory corruption vulnerability in Kernel, published on 29 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
perf bpf: Avoid memory leak from perf_env__insert_btf()
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 v5.4.162 by commit 642fc22210a5e59d40b1e4d56d21ec3effd401f2, it was introduced in version v5.1 by commit 3792cb2ff43b1b193136a03ce1336462a827d792. For more details please see the references link.
Which versions are affected by GSD-2021-1002265?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002265?
No fix has been published for GSD-2021-1002265 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-2021-1002265 being exploited?
There is no known exploitation of GSD-2021-1002265 in the wild and no public exploit code.