GSD-2023-1000935 dm thin: Use last transaction's pmd->root when commit failed
A flaw in the Linux kernel's device-mapper thin provisioning could cause a denial of service when a commit fails.
- 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-2023-1000935?
GSD-2023-1000935 is a denial of service vulnerability in Kernel, published on 17 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
dm thin: Use last transaction's pmd->root when commit failed
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 v5.15.87 by commit 4b710e8481ade7c9200e94d3018e99dc42a0a0e8, it was introduced in version v3.2 by commit 991d9fa02da0dd1f843dc011376965e0c8c6c9b5. For more details please see the references link.
Which versions are affected by GSD-2023-1000935?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000935?
No fix has been published for GSD-2023-1000935 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-2023-1000935 being exploited?
There is no known exploitation of GSD-2023-1000935 in the wild and no public exploit code.