CVE-2026-74296 RDMA/mlx5: Release the HW‑provided UAR index rather than the SW one
High 7.8
Published
Updated
Check this codebase for CVE-2026-74296 and fix it if it is affected.
What it is: CVE-2026-74296 is a high-severity 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.
Exploitation: There is no known exploitation of CVE-2026-74296 in the wild and no public exploit code.
Affected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-74296/ (Markdown: https://insights.sbomify.com/CVE-2026-74296/index.md)
Incorrect UAR index release in Linux kernel RDMA driver may cause resource management errors, requiring a kernel patch.
- 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-2026-74296?
CVE-2026-74296 is a high-severity 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/mlx5: Release the HW‑provided UAR index rather than the SW one
Free the UAR index returned by the hardware.
Which versions are affected by CVE-2026-74296?
How do I fix CVE-2026-74296?
Apply the vendor's patch.
Is CVE-2026-74296 being exploited?
There is no known exploitation of CVE-2026-74296 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-74296, DEBIAN-CVE-2026-74296, GHSA-vvjm-q4pr-4r6c, UBUNTU-CVE-2026-74296.