GSD-2023-1000276 af_unix: Get user_ns from in_skb in unix_diag_get_exact().
A local attacker can potentially read sensitive kernel memory via the unix_diag_get_exact function due to incorrect user namespace handling.
- 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-2023-1000276?
GSD-2023-1000276 is a 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
af_unix: Get user_ns from in_skb in unix_diag_get_exact().
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 v5.4.227 by commit c66d78aee55dab72c92020ebfbebc464d4f5dd2a, it was introduced in version v5.3 by commit cae9910e73446cac68a54e3a7b02aaa12b689026. For more details please see the references link.
Which versions are affected by GSD-2023-1000276?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000276?
No fix has been published for GSD-2023-1000276 yet. Limit exposure of the affected software until one is available.
Is GSD-2023-1000276 being exploited?
There is no known exploitation of GSD-2023-1000276 in the wild and no public exploit code.