batman-adv: Avoid double-rtnl_lock ELP metric worker
Summary
| CVE | CVE-2026-43382 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-08 15:16:49 UTC |
| Updated | 2026-05-12 14:10:27 UTC |
| 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. |
Risk And Classification
EPSS: 0.000240000 probability, percentile 0.070360000 (date 2026-05-12)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected a0019971f340ae02ba54cf1861f72da7e03e6b66 4c3ae249431b4fcb315d7dfb4c3a13f9e443fd9b git | Not specified |
| CNA | Linux | Linux | affected 3c0e0aecb78cb2a2ca1dc701982d08fedb088dc6 192f40ad8a7dac58dae9199a065dbf7e6e67b75b git | Not specified |
| CNA | Linux | Linux | affected 781a06fd265a8151f7601122d9c2e985663828ff fa7b4edfbabdf9235b0ab4bea297fc12b3bec9ca git | Not specified |
| CNA | Linux | Linux | affected a7aa2317285806640c844acd4cd2cd768e395264 f3ca45673dab0514a887231de6f3243a699d5bfd git | Not specified |
| CNA | Linux | Linux | affected 0fdc3c166ac17b26014313fa2b93696354511b24 b7e5d8ddfdf1d6e9e0808d1adf7736a107372d77 git | Not specified |
| CNA | Linux | Linux | affected 8c8ecc98f5c65947b0070a24bac11e12e47cc65d 2ab9f2531d37775cd79228c1f5d80e6bd08d11d3 git | Not specified |
| CNA | Linux | Linux | affected 8c8ecc98f5c65947b0070a24bac11e12e47cc65d 77808fe7d03ad0062840b95f431869a8b3d88b24 git | Not specified |
| CNA | Linux | Linux | affected 8c8ecc98f5c65947b0070a24bac11e12e47cc65d cfc83a3c71517b59c1047db57da31e26a9dc2f33 git | Not specified |
| CNA | Linux | Linux | affected 1c334629176c2d644befc31a20d4bf75542f7631 git | Not specified |
| CNA | Linux | Linux | affected af264c2a9adc37f4bdf88ca7f3affa15d8c7de9e git | Not specified |
| CNA | Linux | Linux | affected 6.14 | Not specified |
| CNA | Linux | Linux | unaffected 6.14 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.253 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.203 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.167 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.130 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.78 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.19 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.9 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/cfc83a3c71517b59c1047db57da31e26a9dc2f33 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/77808fe7d03ad0062840b95f431869a8b3d88b24 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2ab9f2531d37775cd79228c1f5d80e6bd08d11d3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/fa7b4edfbabdf9235b0ab4bea297fc12b3bec9ca | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4c3ae249431b4fcb315d7dfb4c3a13f9e443fd9b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/b7e5d8ddfdf1d6e9e0808d1adf7736a107372d77 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/192f40ad8a7dac58dae9199a065dbf7e6e67b75b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f3ca45673dab0514a887231de6f3243a699d5bfd | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.