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CVE-2016-8646

5.5 · MEDIUM

The hash_accept function in crypto/algif_hash.c in the Linux kernel before 4.3.6 allows local users to cause a denial of service (OOPS) by attempting to trigger use of in-kernel hash algorithms for…

Published Nov 28, 2016CWE-476EPSS 0.43%

Overview

CVE-2016-8646 is a medium-severity vulnerability. It was published on November 28, 2016 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.0 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

The hash_accept function in crypto/algif_hash.c in the Linux kernel before 4.3.6 allows local users to cause a denial of service (OOPS) by attempting to trigger use of in-kernel hash algorithms for a socket that has received zero bytes of data.

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/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4afa5f9617927453ac04b24b584f6c718dfb4f45Refwww.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.6Refwww.openwall.com/lists/oss-security/2016/11/15/2Refwww.securityfocus.com/bid/94309Refaccess.redhat.com/errata/RHSA-2017:1297Refaccess.redhat.com/errata/RHSA-2017:1298Refaccess.redhat.com/errata/RHSA-2017:1308Refbugzilla.redhat.com/show_bug.cgi?id=1388821GitHubgithub.com/torvalds/linux/commit/4afa5f9617927453ac04b24b584f6c718dfb4f45Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4afa5f9617927453ac04b24b584f6c718dfb4f45

How CyberStrike helps

Frequently asked questions

What is CVE-2016-8646?

CVE-2016-8646 is a medium-severity vulnerability. It was published on November 28, 2016 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

How severe is CVE-2016-8646?

This vulnerability has a CVSS 3.0 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-2016-8646?

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-2016-8646?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-8646 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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