What’s Vulnerable › Vulnerabilities

CVE-2026-74296: RDMA/mlx5: Release the HW‑provided UAR index rather than the SW one

• Severity: high (CVSS 7.8 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 2026-10-16

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Release the HW‑provided UAR index rather than the SW one Free the UAR index returned by the hardware.

Affected products

• Linux kernel: 4.16 — 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/449ae7927152e46acbe5f19f97eafdae6d3a96b1
• https://git.kernel.org/stable/c/6f83de384ca582fa87b4c2b0d03bd1ed3bf9a2ee
• https://git.kernel.org/stable/c/80f1f49f53a42733e60c90e0ec545e647969214d
• https://git.kernel.org/stable/c/aabfc845838ef453f1d22d7665596f9cc48be7dd
• https://git.kernel.org/stable/c/d3ff718c0c7153e2641e6a09507bace14fc5c402
• https://git.kernel.org/stable/c/ef369446f62903ea079e8a7954b5bf8bb8300fe3

Get alerted when CVE-2026-74296 or the next vulnerability affects your stack