CVE-2026-43382 (GCVE-0-2026-43382)
Vulnerability from cvelistv5 – Published: 2026-05-08 14:21 – Updated: 2026-05-23 16:06
VLAI
EPSS
VEX
Title
batman-adv: Avoid double-rtnl_lock ELP metric worker
Summary
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.
Severity
5.5 (Medium)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
a0019971f340ae02ba54cf1861f72da7e03e6b66 , < 4c3ae249431b4fcb315d7dfb4c3a13f9e443fd9b
(git)
Affected: 3c0e0aecb78cb2a2ca1dc701982d08fedb088dc6 , < 192f40ad8a7dac58dae9199a065dbf7e6e67b75b (git) Affected: 781a06fd265a8151f7601122d9c2e985663828ff , < fa7b4edfbabdf9235b0ab4bea297fc12b3bec9ca (git) Affected: a7aa2317285806640c844acd4cd2cd768e395264 , < f3ca45673dab0514a887231de6f3243a699d5bfd (git) Affected: 0fdc3c166ac17b26014313fa2b93696354511b24 , < b7e5d8ddfdf1d6e9e0808d1adf7736a107372d77 (git) Affected: 8c8ecc98f5c65947b0070a24bac11e12e47cc65d , < 2ab9f2531d37775cd79228c1f5d80e6bd08d11d3 (git) Affected: 8c8ecc98f5c65947b0070a24bac11e12e47cc65d , < 77808fe7d03ad0062840b95f431869a8b3d88b24 (git) Affected: 8c8ecc98f5c65947b0070a24bac11e12e47cc65d , < cfc83a3c71517b59c1047db57da31e26a9dc2f33 (git) Affected: 1c334629176c2d644befc31a20d4bf75542f7631 (git) Affected: af264c2a9adc37f4bdf88ca7f3affa15d8c7de9e (git) Affected: 5.10.235 , < 5.10.253 (semver) Affected: 5.15.179 , < 5.15.203 (semver) Affected: 6.1.129 , < 6.1.167 (semver) Affected: 6.6.79 , < 6.6.130 (semver) Affected: 6.12.16 , < 6.12.78 (semver) Affected: 5.4.291 , < 5.5 (semver) Affected: 6.13.4 , < 6.14 (semver) |
guessed | |
| Linux | Linux |
Affected:
6.14
Unaffected: 0 , < 6.14 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
guessed |
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The approach for __ethtool_get_link_ksettings() must\\nalso be used instead and the lockless version __batadv_get_real_netdev()\\nhas to be called.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/batman-adv/bat_v_elp.c\",\"net/batman-adv/hard-interface.c\",\"net/batman-adv/hard-interface.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"a0019971f340ae02ba54cf1861f72da7e03e6b66\",\"lessThan\":\"4c3ae249431b4fcb315d7dfb4c3a13f9e443fd9b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3c0e0aecb78cb2a2ca1dc701982d08fedb088dc6\",\"lessThan\":\"192f40ad8a7dac58dae9199a065dbf7e6e67b75b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"781a06fd265a8151f7601122d9c2e985663828ff\",\"lessThan\":\"fa7b4edfbabdf9235b0ab4bea297fc12b3bec9ca\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a7aa2317285806640c844acd4cd2cd768e395264\",\"lessThan\":\"f3ca45673dab0514a887231de6f3243a699d5bfd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0fdc3c166ac17b26014313fa2b93696354511b24\",\"lessThan\":\"b7e5d8ddfdf1d6e9e0808d1adf7736a107372d77\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8c8ecc98f5c65947b0070a24bac11e12e47cc65d\",\"lessThan\":\"2ab9f2531d37775cd79228c1f5d80e6bd08d11d3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8c8ecc98f5c65947b0070a24bac11e12e47cc65d\",\"lessThan\":\"77808fe7d03ad0062840b95f431869a8b3d88b24\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8c8ecc98f5c65947b0070a24bac11e12e47cc65d\",\"lessThan\":\"cfc83a3c71517b59c1047db57da31e26a9dc2f33\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1c334629176c2d644befc31a20d4bf75542f7631\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"af264c2a9adc37f4bdf88ca7f3affa15d8c7de9e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.235\",\"lessThan\":\"5.10.253\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.15.179\",\"lessThan\":\"5.15.203\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.1.129\",\"lessThan\":\"6.1.167\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.6.79\",\"lessThan\":\"6.6.130\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.12.16\",\"lessThan\":\"6.12.78\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.4.291\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.13.4\",\"lessThan\":\"6.14\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/batman-adv/bat_v_elp.c\",\"net/batman-adv/hard-interface.c\",\"net/batman-adv/hard-interface.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.253\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.203\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.167\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.130\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.78\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.19\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.9\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4.291\",\"versionEndExcluding\":\"5.5\",\"matchCriteriaId\":\"2082E874-B9D3-4B60-9D27-1F3B8A838CD0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartInclud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"redhat_vex": {
"aggregate_severity": "None",
"current_release_date": "2026-06-28T07:37:15+00:00",
"cve": "CVE-2026-43382",
"id": "CVE-2026-43382",
"initial_release_date": "2026-05-08T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: batman-adv: Avoid double-rtnl_lock ELP metric worker",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43382.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T17:04:58Z",
"cve": "CVE-2026-43382",
"id": "CVE-2026-43382",
"initial_release_date": "2026-05-13T03:34:37Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "424",
"product_status:known_not_affected": "294",
"product_status:recommended": "250",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-43382",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43382.json",
"version": "8"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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