GSD-2021-1000121 ACPI: custom_method: fix potential use-after-free issue
A use-after-free vulnerability in the Linux Kernel ACPI custom_method allows local attackers with high privileges to potentially execute code or 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-2021-1000121?
GSD-2021-1000121 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
ACPI: custom_method: fix potential use-after-free issue
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 v5.11.20 by commit f16737caf41fc06cfe6e49048becb09657074d4b, it was introduced in version v5.4 by commit 03d1571d9513369c17e6848476763ebbd10ec2cb. For more details please see the references link.
Which versions are affected by GSD-2021-1000121?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000121?
No fix has been published for GSD-2021-1000121 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-2021-1000121 being exploited?
There is no known exploitation of GSD-2021-1000121 in the wild and no public exploit code.