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CVE-2026-93277

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Validate udata before executing commands The destroy callbacks currently zero the udata output after tearing down…

Published Sep 24, 2026EPSS 0.14%

Overview

CVE-2026-93277 is a high-severity vulnerability. It was published on September 24, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/bnxt_re: Validate udata before executing commands

The destroy callbacks currently zero the udata output after tearing down

driver resources. If the userspace access fails, uverbs preserves the

uobject and allows the destroy callback to run again, even though the

driver resource has already been freed.

Call ib_no_udata_io() before teardown so udata failures are detected

while the resource is still intact, then return success after teardown

completes.

As part of this change, move ib_respond_empty_udata() to the start of

the create and modify flows. While this is not strictly required for

general create flows, as the core layer unwinds uobjects on failure, it

is necessary for create AH. In _rdma_create_ah(), the HW object is

otherwise leaked.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/c5643ea4f040acc2f4d1e88f49bd0be51110ff2fRefgit.kernel.org/stable/c/d38c835925d4a3bfdf0a85ff2829ee90c709c561

How CyberStrike helps

Frequently asked questions

What is CVE-2026-93277?

CVE-2026-93277 is a high-severity vulnerability. It was published on September 24, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-93277?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-93277?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-93277?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-93277 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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