Strix
26.1K

CVE-2026-63835

UnknownEPSS 0.17%

Last modified

CVE-2026-63835 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.17%

7.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= f89255a02f1d75d8e1b9d1c31435fcb64840cb2a, < d462ced79dd430200cf888984e8005da77fc810b; >= f89255a02f1d75d8e1b9d1c31435fcb64840cb2a, < f79deaaf822ab0ee2424cf28781f9ab91576bea3; >= f89255a02f1d75d8e1b9d1c31435fcb64840cb2a, < d3569327fc7395b2b0461a0a0cb77a0bb74786c0; >= f89255a02f1d75d8e1b9d1c31435fcb64840cb2a, < 97644fdaaf6446ffbe182c5eb804fceb5b1a51b7; >= f89255a02f1d75d8e1b9d1c31435fcb64840cb2a, < f04dde74399431fb07abbdd9cd5d0ed624771d04; >= f89255a02f1d75d8e1b9d1c31435fcb64840cb2a, < 3d4548c96d6f21ac1a9b06c5f82f3ef439c87023; >= f89255a02f1d75d8e1b9d1c31435fcb64840cb2a, < 86ab6b6fb5b82163bf6c45780bb72150021d7349; >= f89255a02f1d75d8e1b9d1c31435fcb64840cb2a, < d11c00b95b2a3b3934007fc003dccc6fdcc061ad
LinuxLinux5.4

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-63835?
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.
How severe is CVE-2026-63835?
Severity scoring for CVE-2026-63835 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-63835?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-63835?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST