CVE-2024-50208 RDMA/bnxt_re: Fix a bug while setting up Level-2 PBL pages
A memory corruption bug in the Linux kernel RDMA driver allows attackers to cause invalid memory access, 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-2024-50208?
CVE-2024-50208 is a high-severity memory corruption vulnerability in Linux kernel, published on 8 Nov 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:
RDMA/bnxt_re: Fix a bug while setting up Level-2 PBL pages
Avoid memory corruption while setting up Level-2 PBL pages for the non MR resources when num_pages > 256K.
There will be a single PDE page address (contiguous pages in the case of > PAGE_SIZE), but, current logic assumes multiple pages, leading to invalid memory access after 256K PBL entries in the PDE.
Weakness: CWE-125
Which versions are affected by CVE-2024-50208?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-50208?
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-2024-50208 being exploited?
There is no known exploitation of CVE-2024-50208 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-53292, AZL-53337, BELL-CVE-2024-50208, DEBIAN-CVE-2024-50208, GHSA-57xx-4r4j-43p7, UBUNTU-CVE-2024-50208.