Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-31677

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - limit RX SG extraction by receive buffer budget Make af_alg_get_rsgl() limit each RX scatterlist extraction to…

Published Apr 25, 2026EPSS 0.11%

Overview

CVE-2026-31677 is a medium-severity vulnerability. It was published on April 25, 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:

crypto: af_alg - limit RX SG extraction by receive buffer budget

Make af_alg_get_rsgl() limit each RX scatterlist extraction to the

remaining receive buffer budget.

af_alg_get_rsgl() currently uses af_alg_readable() only as a gate

before extracting data into the RX scatterlist. Limit each extraction

to the remaining af_alg_rcvbuf(sk) budget so that receive-side

accounting matches the amount of data attached to the request.

If skcipher cannot obtain enough RX space for at least one chunk while

more data remains to be processed, reject the recvmsg call instead of

rounding the request length down to zero.

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/07c6f6ffe29009426f0bd4d3cfbb6308b8ea8453Refgit.kernel.org/stable/c/4a264b2614c73c96666e196bbabe0cead52bdba7Refgit.kernel.org/stable/c/8eceab19eba9dcbfd2a0daec72e1bf48aa100170Refgit.kernel.org/stable/c/9bf3e6ccfdcfe56ae3190d1ae987dacf1cfef4f9

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31677?

CVE-2026-31677 is a medium-severity vulnerability. It was published on April 25, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-31677?

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-2026-31677?

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-2026-31677?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31677 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.

Related MEDIUM CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999