CVE-2026-43382batman-adv: Avoid double-rtnl_lock ELP metric worker
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- May 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from a0019971f340ae02ba54cf1861f72da7e03e6b66 before 4c3ae249431b4fcb315d7dfb4c3a13f9e443fd9b; from 3c0e0aecb78cb2a2ca1dc701982d08fedb088dc6 before 192f40ad8a7dac58dae9199a065dbf7e6e67b75b; from 781a06fd265a8151f7601122d9c2e985663828ff before fa7b4edfbabdf9235b0ab4bea297fc12b3bec9ca; from a7aa2317285806640c844acd4cd2cd768e395264 before f3ca45673dab0514a887231de6f3243a699d5bfd; from 0fdc3c166ac17b26014313fa2b93696354511b24 before b7e5d8ddfdf1d6e9e0808d1adf7736a107372d77; 8c8ecc98f5c65947b0070a24bac11e12e47cc65d builds before 2ab9f2531d37775cd79228c1f5d80e6bd08d11d3; from 8c8ecc98f5c65947b0070a24bac11e12e47cc65d before 77808fe7d03ad0062840b95f431869a8b3d88b24; from 8c8ecc98f5c65947b0070a24bac11e12e47cc65d before cfc83a3c71517b59c1047db57da31e26a9dc2f33; and 9 more ranges | CNA record |
linux linux_kernel linux:linux_kernel | from 5.4.291 before 5.5; from 5.10.235 before 5.10.253; from 5.15.179 before 5.15.203; from 6.1.129 before 6.1.167; from 6.6.79 before 6.6.130; from 6.12.16 before 6.12.78; from 6.13.4 before 6.14; from 6.14.1 before 6.18.19; and 9 more ranges | NVD |
References
- https://git.kernel.org/stable/c/4c3ae249431b4fcb315d7dfb4c3a13f9e443fd9bpatch
- https://git.kernel.org/stable/c/192f40ad8a7dac58dae9199a065dbf7e6e67b75bpatch
- https://git.kernel.org/stable/c/fa7b4edfbabdf9235b0ab4bea297fc12b3bec9capatch
- https://git.kernel.org/stable/c/f3ca45673dab0514a887231de6f3243a699d5bfdpatch
- https://git.kernel.org/stable/c/b7e5d8ddfdf1d6e9e0808d1adf7736a107372d77patch
- https://git.kernel.org/stable/c/2ab9f2531d37775cd79228c1f5d80e6bd08d11d3patch
- https://git.kernel.org/stable/c/77808fe7d03ad0062840b95f431869a8b3d88b24patch
- https://git.kernel.org/stable/c/cfc83a3c71517b59c1047db57da31e26a9dc2f33patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.