GSD-2021-1002477 net/sched: sch_ets: don't peek at classes beyond 'nbands'
A memory corruption flaw in the Linux kernel ETS scheduler allows local attackers to cause denial of service or potentially execute code.
- 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-2021-1002477?
GSD-2021-1002477 is a memory corruption vulnerability in Kernel, published on 19 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
net/sched: sch_ets: don't peek at classes beyond 'nbands'
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 v5.10.83 by commit ae2659d2c670252759ee9c823c4e039c0e05a6f2, it was introduced in version v5.6 by commit dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33. For more details please see the references link.
Which versions are affected by GSD-2021-1002477?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002477?
No fix has been published for GSD-2021-1002477 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-2021-1002477 being exploited?
There is no known exploitation of GSD-2021-1002477 in the wild and no public exploit code.