GSD-2021-1001621 bpf, s390: Fix potential memory leak about jit_data
A memory leak in the s390 BPF JIT compiler allows local attackers to cause denial of service by exhausting kernel memory.
- 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-2021-1001621?
GSD-2021-1001621 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
bpf, s390: Fix potential memory leak about jit_data
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 v5.10.73 by commit 29fdb11ca88d3c490a3d56f0dc77eb9444d086be, it was introduced in version v5.4 by commit 1c8f9b91c456f5b47a377a0c8c5d4130fc39433a. For more details please see the references link.
Which versions are affected by GSD-2021-1001621?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001621?
No fix has been published for GSD-2021-1001621 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-2021-1001621 being exploited?
There is no known exploitation of GSD-2021-1001621 in the wild and no public exploit code.