GSD-2021-1001988 regmap: Fix possible double-free in regcache_rbtree_exit()
A double-free vulnerability in the Linux kernel regmap subsystem could lead to system instability or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not stated
- Fix
- None listed
What is GSD-2021-1001988?
GSD-2021-1001988 is an use after free vulnerability in Kernel, published on 14 Nov 2021.
Official description
regmap: Fix possible double-free in regcache_rbtree_exit()
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 v4.19.215 by commit 3dae1a4eced3ee733d7222e69b8a55caf2d61091, it was introduced in version v3.12 by commit 3f4ff561bc88b074d5e868dde4012d89cbb06c87. For more details please see the references link.
Which versions are affected by GSD-2021-1001988?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001988?
No fix has been published for GSD-2021-1001988 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-2021-1001988 being exploited?
There is no known exploitation of GSD-2021-1001988 in the wild and no public exploit code.