CVE-2026-43382 (GCVE-0-2026-43382)
Vulnerability from cvelistv5
Published
2026-05-08 14:21
Modified
2026-05-23 16:06
Severity ?
VLAI Severity ?
EPSS score ?
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: a0019971f340ae02ba54cf1861f72da7e03e6b66 Version: 3c0e0aecb78cb2a2ca1dc701982d08fedb088dc6 Version: 781a06fd265a8151f7601122d9c2e985663828ff Version: a7aa2317285806640c844acd4cd2cd768e395264 Version: 0fdc3c166ac17b26014313fa2b93696354511b24 Version: 8c8ecc98f5c65947b0070a24bac11e12e47cc65d Version: 8c8ecc98f5c65947b0070a24bac11e12e47cc65d Version: 8c8ecc98f5c65947b0070a24bac11e12e47cc65d Version: 1c334629176c2d644befc31a20d4bf75542f7631 Version: af264c2a9adc37f4bdf88ca7f3affa15d8c7de9e Version: 5.10.235 ≤ Version: 5.15.179 ≤ Version: 6.1.129 ≤ Version: 6.6.79 ≤ Version: 6.12.16 ≤ Version: 5.4.291 ≤ Version: 6.13.4 ≤ |
||
{
"containers": {
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"programFiles": [
"net/batman-adv/bat_v_elp.c",
"net/batman-adv/hard-interface.c",
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],
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},
{
"lessThan": "5.10.253",
"status": "affected",
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"versionType": "semver"
},
{
"lessThan": "5.15.203",
"status": "affected",
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},
{
"lessThan": "6.1.167",
"status": "affected",
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},
{
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"status": "affected",
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},
{
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"status": "affected",
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},
{
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},
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}
]
},
{
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"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",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.14"
},
{
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"status": "unaffected",
"version": "0",
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},
{
"lessThanOrEqual": "5.10.*",
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"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
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},
{
"lessThanOrEqual": "6.1.*",
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},
{
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},
{
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},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.19",
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},
{
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"status": "unaffected",
"version": "6.19.9",
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},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
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"versionStartIncluding": "5.10.235",
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{
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},
{
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{
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{
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],
"negate": false,
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}
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: Avoid double-rtnl_lock ELP metric worker\n\nbatadv_v_elp_get_throughput() might be called when the RTNL lock is already\nheld. This could be problematic when the work queue item is cancelled via\ncancel_delayed_work_sync() in batadv_v_elp_iface_disable(). In this case,\nan rtnl_lock() would cause a deadlock.\n\nTo avoid this, rtnl_trylock() was used in this function to skip the\nretrieval of the ethtool information in case the RTNL lock was already\nheld.\n\nBut for cfg80211 interfaces, batadv_get_real_netdev() was called - which\nalso uses rtnl_lock(). The approach for __ethtool_get_link_ksettings() must\nalso be used instead and the lockless version __batadv_get_real_netdev()\nhas to be called."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-23T16:06:54.305Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/4c3ae249431b4fcb315d7dfb4c3a13f9e443fd9b"
},
{
"url": "https://git.kernel.org/stable/c/192f40ad8a7dac58dae9199a065dbf7e6e67b75b"
},
{
"url": "https://git.kernel.org/stable/c/fa7b4edfbabdf9235b0ab4bea297fc12b3bec9ca"
},
{
"url": "https://git.kernel.org/stable/c/f3ca45673dab0514a887231de6f3243a699d5bfd"
},
{
"url": "https://git.kernel.org/stable/c/b7e5d8ddfdf1d6e9e0808d1adf7736a107372d77"
},
{
"url": "https://git.kernel.org/stable/c/2ab9f2531d37775cd79228c1f5d80e6bd08d11d3"
},
{
"url": "https://git.kernel.org/stable/c/77808fe7d03ad0062840b95f431869a8b3d88b24"
},
{
"url": "https://git.kernel.org/stable/c/cfc83a3c71517b59c1047db57da31e26a9dc2f33"
}
],
"title": "batman-adv: Avoid double-rtnl_lock ELP metric worker",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-43382",
"datePublished": "2026-05-08T14:21:30.062Z",
"dateReserved": "2026-05-01T14:12:56.006Z",
"dateUpdated": "2026-05-23T16:06:54.305Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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