What’s Vulnerable › Vulnerabilities

CVE-2026-72495: RDMA/bnxt_re: Avoid repeated requests to allocate WC pages

• Severity: critical (CVSS 9.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-10-21

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.

Affected products

• Linux kernel: 6.5 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/00c71846874fea4917961236e49287a1850dcf98
• https://git.kernel.org/stable/c/441baa79043431807115fd030d7d0bb14ed441a0
• https://git.kernel.org/stable/c/478c4d24193fe3e6aa2accd4874ae43000e4a217
• https://git.kernel.org/stable/c/8e59bd37d6d63a06ed452eaffe6c9d4ad903af7b
• https://git.kernel.org/stable/c/da406b8b49c1dfe661a497483940d7ee781430db

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