CVE-2024-45775 Grub2: commands/extcmd: missing check for failed allocation
A missing memory allocation check in GRUB2 can cause a crash or IVT corruption when parsing arguments, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-45775?
CVE-2024-45775 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 18 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in grub2 where the grub_extcmd_dispatcher() function calls grub_arg_list_alloc() to allocate memory for the grub's argument list. However, it fails to check in case the memory allocation fails. Once the allocation fails, a NULL point will be processed by the parse_option() function, leading grub to crash or, in some rare scenarios, corrupt the IVT data.
Weakness: CWE-252
Which versions are affected by CVE-2024-45775?
How do I fix CVE-2024-45775?
Apply the vendor's patch.
Is CVE-2024-45775 being exploited?
There is no known exploitation of CVE-2024-45775 in the wild and no public exploit code.
Sources
Also known as AZL-56937, AZL-57052, BELL-CVE-2024-45775, DEBIAN-CVE-2024-45775, GHSA-pf8f-3pq9-mrv7, UBUNTU-CVE-2024-45775.