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CVE-2026-68320

7.3 · HIGH

In the Linux kernel, the following vulnerability has been resolved: sctp: fix auth_chunk_list capacity check in sctp_auth_ep_add_chunkid sctp_auth_ep_add_chunkid() uses SCTP_NUM_CHUNK_TYPES (20)…

Published Aug 10, 2026EPSS 0.13%

Overview

CVE-2026-68320 is a high-severity vulnerability. It was published on August 10, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.3, 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:

sctp: fix auth_chunk_list capacity check in sctp_auth_ep_add_chunkid

sctp_auth_ep_add_chunkid() uses SCTP_NUM_CHUNK_TYPES (20) as the

capacity limit for ep->auth_chunk_list, allowing it to hold up to

20 chunk entries (param_hdr.length up to 24). However, the copy

destination asoc->c.auth_chunks in struct sctp_cookie is only

SCTP_AUTH_MAX_CHUNKS (16) entries (20 bytes). When more than 16

chunks are added, sctp_association_init() memcpy overflows the

destination by up to 4 bytes.

Fix by using SCTP_AUTH_MAX_CHUNKS as the capacity limit, matching

the destination capacity.

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/11092d79eb2b7c0068382f72fc2416d1786bb2e0Refgit.kernel.org/stable/c/3d22a7da2e264f407c729f33a0a346ff76108bc6Refgit.kernel.org/stable/c/54bb4c03fa17cdcb157c26c33e60a78cf32960f5Refgit.kernel.org/stable/c/5a365f1e423444c5da7eb689a8661633dad43e48Refgit.kernel.org/stable/c/6837c1c19a259518974cbc5a52017646e3906564Refgit.kernel.org/stable/c/886e28e14ab655012779016d251fef53d103aa12Refgit.kernel.org/stable/c/b6ea3dda09eb4d5caf7bbc00f857688cf9e98255Refgit.kernel.org/stable/c/ff04b26794a16a8a879eb4fd2c02c2d6b03850e9

How CyberStrike helps

Frequently asked questions

What is CVE-2026-68320?

CVE-2026-68320 is a high-severity vulnerability. It was published on August 10, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

How severe is CVE-2026-68320?

This vulnerability has a CVSS 3.1 base score of 7.3, 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-2026-68320?

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-2026-68320?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-68320 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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