GSD-2021-1002582 serial: liteuart: fix minor-number leak on probe errors
A resource leak in the liteuart serial driver probe error path can lead to denial of service by exhausting minor numbers.
- 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-2021-1002582?
GSD-2021-1002582 is a denial of service 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
serial: liteuart: fix minor-number leak on probe errors
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 v5.15.7 by commit 888fc81107cacd2a4f681bac7bb785cef868214f, it was introduced in version v5.11 by commit 1da81e5562fac8286567422cc56a7fbd0dc646d4. For more details please see the references link.
Which versions are affected by GSD-2021-1002582?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002582?
No fix has been published for GSD-2021-1002582 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-2021-1002582 being exploited?
There is no known exploitation of GSD-2021-1002582 in the wild and no public exploit code.