FKIE_CVE-2026-98331
Vulnerability from fkie_nvd - Published: 2026-10-06 09:18 - Updated: 2026-10-19 10:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: unlist vifs when their netdev is unregistered
mac80211 only removes vifs from the local->interfaces list when
an interface is removed via ieee80211_if_remove(), before it
unregisters the netdev. However, it's possible for a netdev to
be unregistered without going through that: When the netns that
holds the wiphy is destroyed, the wiphy is supposed to move to
the init_ns, but that can run into allocation failures.
Then, mac80211 has an interface listed that doesn't exist, and
will eventually hit
BUG: failure at net/wireless/core.h:141/wiphy_to_rdev()!
...
_cfg80211_unregister_wdev+0x24/0x36a [cfg80211]
cfg80211_unregister_wdev+0x15/0x1d [cfg80211]
ieee80211_remove_interfaces+0x1ff/0x257 [mac80211]
ieee80211_unregister_hw+0x73/0x1d1 [mac80211]
mac80211_hwsim_del_radio+0x114/0x166 [mac80211_hwsim]
Remove the interface from the list in ->ndo_uninit if it's still
around to avoid this.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/mac80211/iface.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "a22c02863439993095acd0c3db97fa53cd515f4f",
"status": "affected",
"version": "463d018323851a608eef52a9427b0585005c647f",
"versionType": "git"
},
{
"lessThan": "20a56e96a6f7b4dfbd13f8732fd2673409fc7ba0",
"status": "affected",
"version": "463d018323851a608eef52a9427b0585005c647f",
"versionType": "git"
},
{
"lessThan": "b735ad1a9aca6080192c1316cf2706e5e1318762",
"status": "affected",
"version": "463d018323851a608eef52a9427b0585005c647f",
"versionType": "git"
},
{
"lessThan": "d45bf731ec7085d2cc2c5d179d3b3b6c743d4fb1",
"status": "affected",
"version": "463d018323851a608eef52a9427b0585005c647f",
"versionType": "git"
},
{
"lessThan": "821bab0456dfca12acef6df702c8f2477d313227",
"status": "affected",
"version": "463d018323851a608eef52a9427b0585005c647f",
"versionType": "git"
},
{
"lessThan": "eee2efd82867b623982ac51925b5a1812a74c50d",
"status": "affected",
"version": "463d018323851a608eef52a9427b0585005c647f",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/mac80211/iface.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.32"
},
{
"lessThan": "2.6.32",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: unlist vifs when their netdev is unregistered\n\nmac80211 only removes vifs from the local-\u003einterfaces list when\nan interface is removed via ieee80211_if_remove(), before it\nunregisters the netdev. However, it\u0027s possible for a netdev to\nbe unregistered without going through that: When the netns that\nholds the wiphy is destroyed, the wiphy is supposed to move to\nthe init_ns, but that can run into allocation failures.\n\nThen, mac80211 has an interface listed that doesn\u0027t exist, and\nwill eventually hit\n\n BUG: failure at net/wireless/core.h:141/wiphy_to_rdev()!\n ...\n _cfg80211_unregister_wdev+0x24/0x36a [cfg80211]\n cfg80211_unregister_wdev+0x15/0x1d [cfg80211]\n ieee80211_remove_interfaces+0x1ff/0x257 [mac80211]\n ieee80211_unregister_hw+0x73/0x1d1 [mac80211]\n mac80211_hwsim_del_radio+0x114/0x166 [mac80211_hwsim]\n\nRemove the interface from the list in -\u003endo_uninit if it\u0027s still\naround to avoid this."
}
],
"id": "CVE-2026-98331",
"lastModified": "2026-10-19T10:18:35.267",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2026-10-06T09:18:25.517",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/20a56e96a6f7b4dfbd13f8732fd2673409fc7ba0"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/821bab0456dfca12acef6df702c8f2477d313227"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/a22c02863439993095acd0c3db97fa53cd515f4f"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/b735ad1a9aca6080192c1316cf2706e5e1318762"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d45bf731ec7085d2cc2c5d179d3b3b6c743d4fb1"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/eee2efd82867b623982ac51925b5a1812a74c50d"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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