CVE-2024-38541 of: module: add buffer overflow check in of_modalias()
A buffer overflow in the Linux kernel's of_modalias function allows attackers to cause memory corruption, potentially leading to code execution or system 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-2024-38541?
CVE-2024-38541 is a high-severity memory corruption vulnerability in Linux kernel, published on 19 Jun 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:
of: module: add buffer overflow check in of_modalias()
In of_modalias(), if the buffer happens to be too small even for the 1st snprintf() call, the len parameter will become negative and str parameter (if not NULL initially) will point beyond the buffer's end. Add the buffer overflow check after the 1st snprintf() call and fix such check after the strlen() call (accounting for the terminating NUL char).
Weakness: CWE-120
Which versions are affected by CVE-2024-38541?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-38541?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2024-38541 being exploited?
There is no known exploitation of CVE-2024-38541 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-38541, DEBIAN-CVE-2024-38541, GHSA-vjmq-27j9-636j, ROOT-OS-DEBIAN-11-CVE-2024-38541, ROOT-OS-DEBIAN-12-CVE-2024-38541, ROOT-OS-UBUNTU-2204-CVE-2024-38541 and 1 more.