CVE-2022-49934 (GCVE-0-2022-49934)
Vulnerability from cvelistv5 – Published: 2025-06-18 10:54 – Updated: 2026-08-05 08:56
VLAI
EPSS
VEX
Title
wifi: mac80211: Fix UAF in ieee80211_scan_rx()
Summary
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: Fix UAF in ieee80211_scan_rx()
ieee80211_scan_rx() tries to access scan_req->flags after a
null check, but a UAF is observed when the scan is completed
and __ieee80211_scan_completed() executes, which then calls
cfg80211_scan_done() leading to the freeing of scan_req.
Since scan_req is rcu_dereference()'d, prevent the racing in
__ieee80211_scan_completed() by ensuring that from mac80211's
POV it is no longer accessed from an RCU read critical section
before we call cfg80211_scan_done().
Severity
8.8 (High)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
6ea0a69ca21bbddab5b3979c2190013b0263e749 , < 6eb181a64fdabf10be9e54de728876667da20255
(git)
Affected: 6ea0a69ca21bbddab5b3979c2190013b0263e749 , < e0ff39448cea654843744c72c6780293c5082cb1 (git) Affected: 6ea0a69ca21bbddab5b3979c2190013b0263e749 , < 78a07732fbb0934d14827d8f09b9aa6a49ee1aa9 (git) Affected: 6ea0a69ca21bbddab5b3979c2190013b0263e749 , < 9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2d (git) Affected: 6ea0a69ca21bbddab5b3979c2190013b0263e749 , < 4abc8c07a065ecf771827bde3c63fbbe4aa0c08b (git) Affected: 6ea0a69ca21bbddab5b3979c2190013b0263e749 , < 5d20c6f932f2758078d0454729129c894fe353e7 (git) Affected: 6ea0a69ca21bbddab5b3979c2190013b0263e749 , < c0445feb80a4d0854898118fa01073701f8d356b (git) Affected: 6ea0a69ca21bbddab5b3979c2190013b0263e749 , < 60deb9f10eec5c6a20252ed36238b55d8b614a2c (git) |
guessed | |
| Linux | Linux |
Affected:
3.19
Unaffected: 0 , < 3.19 (semver) Unaffected: 4.9.330 , ≤ 4.9.* (semver) Unaffected: 4.14.295 , ≤ 4.14.* (semver) Unaffected: 4.19.260 , ≤ 4.19.* (semver) Unaffected: 5.4.215 , ≤ 5.4.* (semver) Unaffected: 5.10.142 , ≤ 5.10.* (semver) Unaffected: 5.15.66 , ≤ 5.15.* (semver) Unaffected: 5.19.8 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix) |
guessed |
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"id": "CVE-2022-49934",
"lastModified": "2026-08-04T10:18:00.013",
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"url": "https://git.kernel.org/stable/c/5d20c6f932f2758078d0454729129c894fe353e7"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/60deb9f10eec5c6a20252ed36238b55d8b614a2c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/6eb181a64fdabf10be9e54de728876667da20255"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/78a07732fbb0934d14827d8f09b9aa6a49ee1aa9"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/c0445feb80a4d0854898118fa01073701f8d356b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/e0ff39448cea654843744c72c6780293c5082cb1"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T19:42:36+00:00",
"cve": "CVE-2022-49934",
"id": "CVE-2022-49934",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:fixed": "321",
"product_status:known_affected": "80",
"product_status:known_not_affected": "76",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: wifi: mac80211: Fix UAF in ieee80211_scan_rx()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49934.json",
"version": "3"
}
}
}
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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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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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