GSD-2023-1002021 io_uring/poll: add hash if ready poll request can't complete inline
A flaw in the Linux kernel io_uring subsystem can cause a denial of service when poll requests cannot complete inline.
- 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-2023-1002021?
GSD-2023-1002021 is a denial of service vulnerability in Kernel, published on 13 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
io_uring/poll: add hash if ready poll request can't complete inline
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 v6.1.7 by commit 4ad6c063541665c407d17e1faf2fe4f04e947dcc, it was introduced in version v6.0 by commit 49f1c68e048f1706b71c8255faf8110113d1cc48. For more details please see the references link.
Which versions are affected by GSD-2023-1002021?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1002021?
No fix has been published for GSD-2023-1002021 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2023-1002021 being exploited?
There is no known exploitation of GSD-2023-1002021 in the wild and no public exploit code.