CVE-2024-56573 efi/libstub: Free correct pointer on failure
Incorrect pointer freeing in Linux kernel EFI stub causes memory corruption, requiring a patch to prevent potential instability or crashes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-56573?
CVE-2024-56573 is a high-severity vulnerability in Linux kernel, published on 27 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
efi/libstub: Free correct pointer on failure
cmdline_ptr is an out parameter, which is not allocated by the function itself, and likely points into the caller's stack.
cmdline refers to the pool allocation that should be freed when cleaning up after a failure, so pass this instead to free_pool().
Weakness: CWE-763
Which versions are affected by CVE-2024-56573?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-56573?
Apply the vendor's patch.
Is CVE-2024-56573 being exploited?
There is no known exploitation of CVE-2024-56573 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-56573, DEBIAN-CVE-2024-56573, GHSA-vqjc-5c88-xv3g, UBUNTU-CVE-2024-56573.