Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-64096

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: batman-adv: mcast: fix use-after-free in orig_node RCU release batadv_mcast_purge_orig() removes entries from RCU-protected hli…

Published Jul 19, 2026CWE-416EPSS 0.26%

Overview

CVE-2026-64096 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, 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:

batman-adv: mcast: fix use-after-free in orig_node RCU release

batadv_mcast_purge_orig() removes entries from RCU-protected hlists but

does not wait for an RCU grace period before returning. Concurrent RCU

readers may still accesses references to those entries at the point of

removal. RCU-protected readers trying to operate on entries like

orig->mcast_want_all_ipv6_node will then access already freed memory.

Fix this by moving batadv_mcast_purge_orig() to batadv_orig_node_release(),

just before the call_rcu() invocation. This ensures RCU readers that were

active at purge time have drained before the orig_node memory is reclaimed.

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/20c2d6a20ca936f5aaa6dd40f73f262ac45c87ccRefgit.kernel.org/stable/c/70bcb678561f0fb58f33270fc73f12f3be72b878Refgit.kernel.org/stable/c/78a63fb2f7d5630d1c1f2859a20d4e4226863b41Refgit.kernel.org/stable/c/8a3707653ab658e082ccd992e92594e01b09a3fcRefgit.kernel.org/stable/c/aef897c9d2dd0d9339167fb82b62beff68d076cbRefgit.kernel.org/stable/c/ced48f55bac73f0822eae90509e51b42b4f646c8Refgit.kernel.org/stable/c/edfb1e094104a50f931553dc82ac59246569fd32Refgit.kernel.org/stable/c/ff3a4487ead475e27b43280b8ee3d8464fe280e1

How CyberStrike helps

Frequently asked questions

What is CVE-2026-64096?

CVE-2026-64096 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-64096?

This vulnerability has a CVSS 3.1 base score of 8.8, 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-2026-64096?

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-2026-64096?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-64096 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 HIGH CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999