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CVE-2026-31626

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: initialize le_tmp64 in rtw_BIP_verify() Initialize le_tmp64 to zero in rtw_BIP_verify() to prevent using un…

Published Apr 24, 2026CWE-908EPSS 0.44%

Overview

CVE-2026-31626 is a high-severity vulnerability. It was published on April 24, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

staging: rtl8723bs: initialize le_tmp64 in rtw_BIP_verify()

Initialize le_tmp64 to zero in rtw_BIP_verify() to prevent using

uninitialized data.

Smatch warns that only 6 bytes are copied to this 8-byte (u64)

variable, leaving the last two bytes uninitialized:

drivers/staging/rtl8723bs/core/rtw_security.c:1308 rtw_BIP_verify()

warn: not copying enough bytes for '&le_tmp64' (8 vs 6 bytes)

Initializing the variable at the start of the function fixes this

warning and ensures predictable behavior.

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/51532c7c1d357145f4ac561648499f7a6847f739Refgit.kernel.org/stable/c/6792624d933146e2757b07092e93ad915cb58930Refgit.kernel.org/stable/c/8c964b82a4e97ec7f25e17b803ee196009b38a57Refgit.kernel.org/stable/c/9e911eead187240193516edf55a0e1ab3425aa5bRefgit.kernel.org/stable/c/b487a7754d874230299d5a9c2710ec4df8b2ed8aRefgit.kernel.org/stable/c/c2026c6b603ebec52f55015496703fe79077accfRefgit.kernel.org/stable/c/c65ee4d3be5df395e48afbcd0946dd5fce4338a9Refgit.kernel.org/stable/c/d5b8f5f8d6fc09a8af5ed139c688660f578ed732Refgit.kernel.org/stable/c/ef74ce5f0bc0e53ce702d8a794f3957884a26efc

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31626?

CVE-2026-31626 is a high-severity vulnerability. It was published on April 24, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-31626?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-31626?

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-2026-31626?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31626 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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