GSD-2023-1000146 mm/gup: fix gup_pud_range() for dax
A memory corruption flaw in the Linux kernel's GUP implementation for DAX allows local attackers to potentially execute code or escalate privileges.
- 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-2023-1000146?
GSD-2023-1000146 is a memory corruption vulnerability in Kernel, published on 17 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
mm/gup: fix gup_pud_range() for dax
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 v5.15.83 by commit 3ac29732a2ffa64c7de13a072b0f2848b9c11037, it was introduced in version v5.0 by commit 414fd080d125408cb15d04ff4907e1dd8145c8c7. For more details please see the references link.
Which versions are affected by GSD-2023-1000146?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000146?
No fix has been published for GSD-2023-1000146 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-2023-1000146 being exploited?
There is no known exploitation of GSD-2023-1000146 in the wild and no public exploit code.