GSD-2021-1002287 perf bench futex: Fix memory leak of perf_cpu_map__new()
A memory leak in the Linux kernel's perf bench futex tool 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-2021-1002287?
GSD-2021-1002287 is a denial of service 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 bench futex: Fix memory leak of perf_cpu_map__new()
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 v5.10.82 by commit 2ada5c0877f4aa9b0749e7777557d9a5d2973082, it was introduced in version v5.4 by commit 9c3516d1b850ea938b074df33e4c86d721c77720. For more details please see the references link.
Which versions are affected by GSD-2021-1002287?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002287?
No fix has been published for GSD-2021-1002287 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2021-1002287 being exploited?
There is no known exploitation of GSD-2021-1002287 in the wild and no public exploit code.