CVE-2026-63835
N/AIn 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.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 6th percentile
Impact if exploited
—CVSS · not scored
- No impact metrics
Proof of concept & exploit code
- github-search Search GitHub for public PoC repos
Test against your own equipment
curl -s https://vulnpedia.com/cve/CVE-2026-63835/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-63835/poc.json
References
Technical & other
- https://git.kernel.org/stable/c/d462ced79dd430200cf888984e8005da77fc810b
- https://git.kernel.org/stable/c/f79deaaf822ab0ee2424cf28781f9ab91576bea3
- https://git.kernel.org/stable/c/d3569327fc7395b2b0461a0a0cb77a0bb74786c0
- https://git.kernel.org/stable/c/97644fdaaf6446ffbe182c5eb804fceb5b1a51b7
- https://git.kernel.org/stable/c/f04dde74399431fb07abbdd9cd5d0ed624771d04
- https://git.kernel.org/stable/c/3d4548c96d6f21ac1a9b06c5f82f3ef439c87023
- https://git.kernel.org/stable/c/86ab6b6fb5b82163bf6c45780bb72150021d7349
- https://git.kernel.org/stable/c/d11c00b95b2a3b3934007fc003dccc6fdcc061ad