GSD-2023-1000173 net: tun: Fix use-after-free in tun_detach()
A use-after-free vulnerability in the Linux kernel's tun driver 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-2023-1000173?
GSD-2023-1000173 is an use after free 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
net: tun: Fix use-after-free in tun_detach()
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 v5.15.82 by commit 04b995e963229501401810dab89dc73e7f12d054, it was introduced in version v4.17 by commit 83c1f36f9880814b24cdf6c2f91f66f61db65326. For more details please see the references link.
Which versions are affected by GSD-2023-1000173?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000173?
No fix has been published for GSD-2023-1000173 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2023-1000173 being exploited?
There is no known exploitation of GSD-2023-1000173 in the wild and no public exploit code.