GSD-2023-1001860 mm/uffd: fix pte marker when fork() without fork event
A local attacker can exploit a memory corruption flaw in the Linux kernel's userfaultfd subsystem to escalate privileges or cause 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-2023-1001860?
GSD-2023-1001860 is a memory corruption vulnerability in Kernel, published on 13 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
mm/uffd: fix pte marker when fork() without fork event
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 v6.1.11 by commit 2d11727655bf931776fb541f5862daf04bd5bf02, it was introduced in version v5.19 by commit c56d1b62cce83695823c13e52f73e92eb568c0c1. For more details please see the references link.
Which versions are affected by GSD-2023-1001860?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1001860?
No fix has been published for GSD-2023-1001860 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-2023-1001860 being exploited?
There is no known exploitation of GSD-2023-1001860 in the wild and no public exploit code.