GSD-2021-1000804 io_uring: fix link timeout refs
A use-after-free vulnerability in the Linux kernel io_uring subsystem allows local attackers to potentially escalate privileges or 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-2021-1000804?
GSD-2021-1000804 is an use after free vulnerability in Kernel, published on 25 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
io_uring: fix link timeout refs
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 v5.12.10 by commit 876808dba2ff7509bdd7f230c4f374a0caf4f410, it was introduced in version v5.12 by commit 9ae1f8dd372e0e4c020b345cf9e09f519265e981. For more details please see the references link.
Which versions are affected by GSD-2021-1000804?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000804?
No fix has been published for GSD-2021-1000804 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-2021-1000804 being exploited?
There is no known exploitation of GSD-2021-1000804 in the wild and no public exploit code.