CVE-2026-43382

In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid double-rtnl_lock ELP metric worker batadv_v_elp_get_throughput() might be called when the RTNL lock is already held. This could be problematic when the work queue item is cancelled via cancel_delayed_work_sync() in batadv_v_elp_iface_disable(). In this case, an rtnl_lock() would cause a deadlock. To avoid this, rtnl_trylock() was used in this function to skip the retrieval of the ethtool information in case the RTNL lock was already held. But for cfg80211 interfaces, batadv_get_real_netdev() was called - which also uses rtnl_lock(). The approach for __ethtool_get_link_ksettings() must also be used instead and the lockless version __batadv_get_real_netdev() has to be called.

• linux linux kernel (>= 5.4.291 < 5.5) • linux linux kernel (>= 5.10.235 < 5.10.253) • linux linux kernel (>= 5.15.179 < 5.15.203) • linux linux kernel (>= 6.1.129 < 6.1.167) • linux linux kernel (>= 6.6.79 < 6.6.130) • linux linux kernel (>= 6.12.16 < 6.12.78) • linux linux kernel (>= 6.13.4 < 6.14) • linux linux kernel (>= 6.14.1 < 6.18.19) • linux linux kernel (>= 6.19 < 6.19.9) • linux linux kernel 6.14 • linux linux kernel 7.0