GSD-2022-1006393 efi: capsule-loader: Fix use-after-free in efi_capsule_write
A use-after-free vulnerability in the Linux kernel's EFI capsule loader 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-2022-1006393?
GSD-2022-1006393 is an use after free vulnerability in Kernel, published on 2 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
efi: capsule-loader: Fix use-after-free in efi_capsule_write
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 v5.15.68 by commit dd291e070be0eca8807476b022bda00c891d9066. For more details please see the references link.
Which versions are affected by GSD-2022-1006393?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1006393?
No fix has been published for GSD-2022-1006393 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-2022-1006393 being exploited?
There is no known exploitation of GSD-2022-1006393 in the wild and no public exploit code.