GSD-2021-1002173 mm/mempolicy: do not allow illegal MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind()
A local attacker can trigger a kernel issue via mbind() with illegal flags, potentially causing a 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-2021-1002173?
GSD-2021-1002173 is a vulnerability in Kernel, published on 14 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
mm/mempolicy: do not allow illegal MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind()
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 by commit 6d2aec9e123bb9c49cb5c7fc654f25f81e688e8c, it was introduced in version v5.12 by commit bda420b985054a3badafef23807c4b4fa38a3dff. For more details please see the references link.
Which versions are affected by GSD-2021-1002173?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002173?
No fix has been published for GSD-2021-1002173 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1002173 being exploited?
There is no known exploitation of GSD-2021-1002173 in the wild and no public exploit code.