GSD-2023-1000044 io_uring: Fix a null-ptr-deref in io_tctx_exit_cb()
A null pointer dereference in the Linux kernel io_uring subsystem allows local attackers to cause a system crash.
- 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-2023-1000044?
GSD-2023-1000044 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
io_uring: Fix a null-ptr-deref in io_tctx_exit_cb()
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 v6.0.13 by commit d91edca1943453aaaba4f380f6f364346222e5cf, it was introduced in version v5.12 by commit d56d938b4bef3e1421a42023cdcd6e13c1f50831. For more details please see the references link.
Which versions are affected by GSD-2023-1000044?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000044?
No fix has been published for GSD-2023-1000044 yet. Limit exposure of the affected software until one is available.
Is GSD-2023-1000044 being exploited?
There is no known exploitation of GSD-2023-1000044 in the wild and no public exploit code.