GSD-2021-1002673 dm btree remove: fix use after free in rebalance_children()
A use-after-free vulnerability in the Linux kernel's device-mapper btree removal logic could allow attackers to execute code or cause a system crash.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not stated
- Fix
- None listed
What is GSD-2021-1002673?
GSD-2021-1002673 is an use after free vulnerability in Kernel, published on 27 Dec 2021.
Official description
dm btree remove: fix use after free in rebalance_children()
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 v5.4.168 by commit 501ecd90efdc9b2edc6c28852ecd098a4adf8f00. For more details please see the references link.
Which versions are affected by GSD-2021-1002673?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002673?
No fix has been published for GSD-2021-1002673 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-2021-1002673 being exploited?
There is no known exploitation of GSD-2021-1002673 in the wild and no public exploit code.