GSD-2022-1004056 um: Fix out-of-bounds read in LDT setup
A local attacker can trigger an out-of-bounds read in the Linux Kernel LDT setup, potentially causing a crash or leaking memory.
- 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-2022-1004056?
GSD-2022-1004056 is a memory corruption vulnerability in Kernel, published on 28 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
um: Fix out-of-bounds read in LDT setup
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 v4.9.318 by commit 668ca34a428d6ffc0f99a1a6a9b661a288d4183b, it was introduced in version v2.6.15 by commit 858259cf7d1c443c836a2022b78cb281f0a9b95e. For more details please see the references link.
Which versions are affected by GSD-2022-1004056?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1004056?
No fix has been published for GSD-2022-1004056 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-2022-1004056 being exploited?
There is no known exploitation of GSD-2022-1004056 in the wild and no public exploit code.