CVE-2024-24856 NULL pointer deference in acpi_db_convert_to_package of Linux acpi module
A missing null check in the Linux kernel ACPI module allows attackers to cause a denial of service via null pointer dereference.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2024-24856?
CVE-2024-24856 is a medium-severity vulnerability in OpenAnolis Anolis OS, published on 17 Apr 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The memory allocation function ACPI_ALLOCATE_ZEROED does not guarantee a successful allocation, but the subsequent code directly dereferences the pointer that receives it, which may lead to null pointer dereference.
To fix this issue, a null pointer check should be added. If it is null, return exception code AE_NO_MEMORY.
Weakness: CWE-476
Which versions are affected by CVE-2024-24856?
How do I fix CVE-2024-24856?
Apply the vendor's patch.
Is CVE-2024-24856 being exploited?
There is no known exploitation of CVE-2024-24856 in the wild and no public exploit code.
Sources
Also known as AZL-62708, BELL-CVE-2024-24856, DEBIAN-CVE-2024-24856, GHSA-j5hc-79cm-3qpw, UBUNTU-CVE-2024-24856.