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.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/3d4548c96d6f21ac1a9b06c5f82f3ef439c87023 Patch
- git.kernel.org/stable/c/86ab6b6fb5b82163bf6c45780bb72150021d7349 Patch
- git.kernel.org/stable/c/97644fdaaf6446ffbe182c5eb804fceb5b1a51b7 Patch
- git.kernel.org/stable/c/d11c00b95b2a3b3934007fc003dccc6fdcc061ad Patch
- git.kernel.org/stable/c/d3569327fc7395b2b0461a0a0cb77a0bb74786c0 Patch
- git.kernel.org/stable/c/d462ced79dd430200cf888984e8005da77fc810b Patch
- git.kernel.org/stable/c/f04dde74399431fb07abbdd9cd5d0ed624771d04 Patch
- git.kernel.org/stable/c/f79deaaf822ab0ee2424cf28781f9ab91576bea3 Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 14 November 2026
- CWE
- CWE-401
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