CVE-2026-72497 RDMA/bnxt_re: Add a max slot check for SQ
A missing validation in the Linux kernel RDMA driver allows invalid slot values, potentially causing a denial of service.
- 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-2026-72497?
CVE-2026-72497 is a high-severity denial of service vulnerability in Linux, published on 15 Aug 2026. 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: Add a max slot check for SQ
The variable WQE mode must be validated against the maximum slots supported by HW. The max supported value is 64K. Adding a max and min check and fail if user supplied value is more than the max supported and zero.
Which versions are affected by CVE-2026-72497?
How do I fix CVE-2026-72497?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-72497 being exploited?
There is no known exploitation of CVE-2026-72497 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72497, DEBIAN-CVE-2026-72497, GHSA-66r3-8x6w-f98f, UBUNTU-CVE-2026-72497.