GSD-2021-1000131 dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails
A double free vulnerability in the Linux kernel device mapper allows local attackers to cause denial of service or potentially escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000131?
GSD-2021-1000131 is an use after free vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails
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 v5.10.36 by commit 1cb02dc76f4c0a2749a02b26469512d6984252e9, it was introduced in version v4.6 by commit 1c357a1e86a4227a6b6059f2de118ae47659cebc. For more details please see the references link.
Which versions are affected by GSD-2021-1000131?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000131?
No fix has been published for GSD-2021-1000131 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2021-1000131 being exploited?
There is no known exploitation of GSD-2021-1000131 in the wild and no public exploit code.