CVE-2026-72495 RDMA/bnxt_re: Avoid repeated requests to allocate WC pages
A race condition in the Linux kernel RDMA driver allows repeated WC page allocation requests, potentially leading to resource exhaustion or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72495?
CVE-2026-72495 is a critical 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: Avoid repeated requests to allocate WC pages
Applications can request multiple WC pages for the same ucontext. As of now, only 1 WC page per ucontext is supported. Add a lock to avoid concurrent access and a check to fail repeated requests. Also, if the mmap entry insert fails for the WC, free the Doorbell page index mapped for the WC page.
Which versions are affected by CVE-2026-72495?
How do I fix CVE-2026-72495?
Apply the vendor's patch.
Is CVE-2026-72495 being exploited?
There is no known exploitation of CVE-2026-72495 in the wild and no public exploit code.
Sources
Also known as AZL-96081, BELL-CVE-2026-72495, DEBIAN-CVE-2026-72495, GHSA-3cmq-754m-66f5, UBUNTU-CVE-2026-72495.