GSD-2022-1005562 sched/core: Do not requeue task on CPU excluded from cpus_mask
A flaw in the Linux kernel scheduler could allow a local attacker to cause a denial of service by requeuing tasks on excluded CPUs.
- 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-2022-1005562?
GSD-2022-1005562 is a denial of service vulnerability in Kernel, published on 17 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
sched/core: Do not requeue task on CPU excluded from cpus_mask
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 v5.15.61 by commit 748d2e9585ae53cb6be48e84f93d2f082ae1d135, it was introduced in version v5.8 by commit c6e7bd7afaeb3af55ffac122828035f1c01d1d7b. For more details please see the references link.
Which versions are affected by GSD-2022-1005562?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1005562?
No fix has been published for GSD-2022-1005562 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-2022-1005562 being exploited?
There is no known exploitation of GSD-2022-1005562 in the wild and no public exploit code.