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CVE-2026-63835

Published Jul 19, 2026 EPSS 0.17% (7th pctl)

Overview

CVE-2026-63835 is a known-severity vulnerability. It was published on July 19, 2026.

Technical Description

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

batman-adv: v: prevent OGM aggregation on disabled hardif

When an interface gets disabled, the worker is correctly disabled by

batadv_hardif_disable_interface() -> ... -> batadv_v_ogm_iface_disable().

In this process, the skb aggr_list is also freed.

But batadv_v_ogm_send_meshif() can still queue new skbs (via

batadv_v_ogm_queue_on_if()) to the aggr_list. This will only stop after all

cores can no longer find the RCU protected list of hard interfaces. These

queued skbs will never be freed or consumed by batadv_v_ogm_aggr_work.

The batadv_v_ogm_iface_disable() function must block

batadv_v_ogm_queue_on_if() to avoid leak of skbs.

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

Ref git.kernel.org/stable/c/3d4548c96d6f21ac1a9b06c5f82f3ef439c87023 Ref git.kernel.org/stable/c/86ab6b6fb5b82163bf6c45780bb72150021d7349 Ref git.kernel.org/stable/c/97644fdaaf6446ffbe182c5eb804fceb5b1a51b7 Ref git.kernel.org/stable/c/d11c00b95b2a3b3934007fc003dccc6fdcc061ad Ref git.kernel.org/stable/c/d3569327fc7395b2b0461a0a0cb77a0bb74786c0 Ref git.kernel.org/stable/c/d462ced79dd430200cf888984e8005da77fc810b Ref git.kernel.org/stable/c/f04dde74399431fb07abbdd9cd5d0ed624771d04 Ref git.kernel.org/stable/c/f79deaaf822ab0ee2424cf28781f9ab91576bea3

Frequently Asked Questions

What is CVE-2026-63835?

CVE-2026-63835 is a known-severity vulnerability. It was published on July 19, 2026.

How severe is CVE-2026-63835?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-63835?

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-2026-63835?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-63835 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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