CVE-2026-72500: RDMA/bnxt_re: Free SRQ toggle page after firmware teardown

Severity: high (CVSS 8.8 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: Free SRQ toggle page after firmware teardown Free the toggle page only after firmware teardown completes so that an NQ interrupt arriving during bnxt_qplib_destroy_srq() won't write the toggle values to an already-freed page. Move free_page() after bnxt_qplib_destroy_srq().

Affected products

Linux kernel: 6.12 — 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/0adcd67f3d6f84835be682da0153f57f5c2f8036
https://git.kernel.org/stable/c/104a7ff382a58a83cae018925e3574c784e8274c
https://git.kernel.org/stable/c/131e2918b9b0529687e67e2e58047304027f095a
https://git.kernel.org/stable/c/3b6ecad5b9b0f7230ed725aafaf8c4ed9327a9bf

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