CVE-2024-36957 octeontx2-af: avoid off-by-one read from userspace
An off-by-one error in the octeontx2-af driver allows reading one byte beyond the user-provided buffer, potentially causing information disclosure 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-2024-36957?
CVE-2024-36957 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 30 May 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:
octeontx2-af: avoid off-by-one read from userspace
We try to access count + 1 byte from userspace with memdup_user(buffer, count + 1). However, the userspace only provides buffer of count bytes and only these count bytes are verified to be okay to access. To ensure the copied buffer is NUL terminated, we use memdup_user_nul instead.
Weakness: CWE-193
Which versions are affected by CVE-2024-36957?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2024-36957?
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-2024-36957 being exploited?
There is no known exploitation of CVE-2024-36957 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BELL-CVE-2024-36957, DEBIAN-CVE-2024-36957, UBUNTU-CVE-2024-36957.