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CVE-2026-43034

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: bnxt_en: set backing store type from query type bnxt_hwrm_func_backing_store_qcaps_v2() stores resp->type from the firmware res…

Published May 1, 2026EPSS 0.16%

Overview

CVE-2026-43034 is a medium-severity vulnerability. It was published on May 1, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

bnxt_en: set backing store type from query type

bnxt_hwrm_func_backing_store_qcaps_v2() stores resp->type from the

firmware response in ctxm->type and later uses that value to index

fixed backing-store metadata arrays such as ctx_arr[] and

bnxt_bstore_to_trace[].

ctxm->type is fixed by the current backing-store query type and matches

the array index of ctx->ctx_arr. Set ctxm->type from the current loop

variable instead of depending on resp->type.

Also update the loop to advance type from next_valid_type in the for

statement, which keeps the control flow simpler for non-valid and

unchanged entries.

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/29732b68a6816a815d58e9ab229844c23617e1e0Refgit.kernel.org/stable/c/4ee937107d52f9e5c350e4b5e629760e328b3d9fRefgit.kernel.org/stable/c/c8d53b70166d1dc463ef42adb7293e1a770822c7

How CyberStrike helps

Frequently asked questions

What is CVE-2026-43034?

CVE-2026-43034 is a medium-severity vulnerability. It was published on May 1, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-43034?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-43034?

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-2026-43034?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-43034 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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