GSD-2021-1002527 io_uring: fail cancellation for EXITING tasks
A race condition in the Linux kernel io_uring subsystem allows local attackers to cause a denial of service by triggering cancellation failures for exiting tasks.
- 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-2021-1002527?
GSD-2021-1002527 is a vulnerability in Kernel, published on 19 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
io_uring: fail cancellation for EXITING tasks
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 v5.15.6 by commit 3d2a1e68fd9904fdc1b02f2e7d40ca47df7ba39f, it was introduced in version v5.15 by commit 89b263f6d56e683ddcf7643140271ef6e36c72b9. For more details please see the references link.
Which versions are affected by GSD-2021-1002527?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002527?
No fix has been published for GSD-2021-1002527 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1002527 being exploited?
There is no known exploitation of GSD-2021-1002527 in the wild and no public exploit code.