GSD-2022-1003887 tty: fix deadlock caused by calling printk() under tty_port->lock
A deadlock in the Linux kernel tty subsystem can cause a system hang, requiring a local attacker to trigger the condition.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1003887?
GSD-2022-1003887 is a denial of service vulnerability in Kernel, published on 28 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
tty: fix deadlock caused by calling printk() under tty_port->lock
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 v4.19.247 by commit 04ee31678c128a6cc7bb057ea189a8624ba5a314, it was introduced in version v4.18 by commit b6da31b2c07c46f2dcad1d86caa835227a16d9ff. For more details please see the references link.
Which versions are affected by GSD-2022-1003887?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1003887?
No fix has been published for GSD-2022-1003887 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-2022-1003887 being exploited?
There is no known exploitation of GSD-2022-1003887 in the wild and no public exploit code.