Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= a0019971f340ae02ba54cf1861f72da7e03e6b66, < 4c3ae249431b4fcb315d7dfb4c3a13f9e443fd9b; >= 3c0e0aecb78cb2a2ca1dc701982d08fedb088dc6, < 192f40ad8a7dac58dae9199a065dbf7e6e67b75b; >= 781a06fd265a8151f7601122d9c2e985663828ff, < fa7b4edfbabdf9235b0ab4bea297fc12b3bec9ca; >= a7aa2317285806640c844acd4cd2cd768e395264, < f3ca45673dab0514a887231de6f3243a699d5bfd; >= 0fdc3c166ac17b26014313fa2b93696354511b24, < b7e5d8ddfdf1d6e9e0808d1adf7736a107372d77; >= 8c8ecc98f5c65947b0070a24bac11e12e47cc65d, < 2ab9f2531d37775cd79228c1f5d80e6bd08d11d3; >= 8c8ecc98f5c65947b0070a24bac11e12e47cc65d, < 77808fe7d03ad0062840b95f431869a8b3d88b24; >= 8c8ecc98f5c65947b0070a24bac11e12e47cc65d, < cfc83a3c71517b59c1047db57da31e26a9dc2f33; 1c334629176c2d644befc31a20d4bf75542f7631; af264c2a9adc37f4bdf88ca7f3affa15d8c7de9e; >= 5.10.235, < 5.10.253; >= 5.15.179, < 5.15.203; >= 6.1.129, < 6.1.167; >= 6.6.79, < 6.6.130; >= 6.12.16, < 6.12.78; >= 5.4.291, < 5.5; >= 6.13.4, < 6.14 |
| Linux | Linux | 6.14 |
References
- https://git.kernel.org/stable/c/192f40ad8a7dac58dae9199a065dbf7e6e67b75bPatch
- https://git.kernel.org/stable/c/2ab9f2531d37775cd79228c1f5d80e6bd08d11d3Patch
- https://git.kernel.org/stable/c/4c3ae249431b4fcb315d7dfb4c3a13f9e443fd9bPatch
- https://git.kernel.org/stable/c/77808fe7d03ad0062840b95f431869a8b3d88b24Patch
- https://git.kernel.org/stable/c/b7e5d8ddfdf1d6e9e0808d1adf7736a107372d77Patch
- https://git.kernel.org/stable/c/cfc83a3c71517b59c1047db57da31e26a9dc2f33Patch
- https://git.kernel.org/stable/c/f3ca45673dab0514a887231de6f3243a699d5bfdPatch
- https://git.kernel.org/stable/c/fa7b4edfbabdf9235b0ab4bea297fc12b3bec9caPatch
Timeline
- Published
- May 8, 2026
- Last modified
- Nov 11, 2026
- NVD status
- Analyzed