CVE-2022-49023 (GCVE-0-2022-49023)
Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2026-08-05 08:53
VLAI
EPSS
VEX
Title
wifi: cfg80211: fix buffer overflow in elem comparison
Summary
In the Linux kernel, the following vulnerability has been resolved:
wifi: cfg80211: fix buffer overflow in elem comparison
For vendor elements, the code here assumes that 5 octets
are present without checking. Since the element itself is
already checked to fit, we only need to check the length.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:12 UTC
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
0b8fb8235be8be99a197e8d948fc0a2df8dc261a , < f5c2ec288a865dbe3706b09bed12302e9f6d696b
(git)
Affected: 0b8fb8235be8be99a197e8d948fc0a2df8dc261a , < 9e6b79a3cd17620d467311b30d56f2648f6880aa (git) Affected: 0b8fb8235be8be99a197e8d948fc0a2df8dc261a , < 88a6fe3707888bd1893e9741157a7035c4159ab6 (git) Affected: 0b8fb8235be8be99a197e8d948fc0a2df8dc261a , < 391cb872553627bdcf236c03ee7d5adb275e37e1 (git) Affected: 0b8fb8235be8be99a197e8d948fc0a2df8dc261a , < 9f16b5c82a025cd4c864737409234ddc44fb166a (git) |
guessed | |
| Linux | Linux |
Affected:
5.1
Unaffected: 0 , < 5.1 (semver) Unaffected: 5.4.226 , ≤ 5.4.* (semver) Unaffected: 5.10.158 , ≤ 5.10.* (semver) Unaffected: 5.15.82 , ≤ 5.15.* (semver) Unaffected: 6.0.12 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix) |
guessed |
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T19:44:58+00:00",
"cve": "CVE-2022-49023",
"id": "CVE-2022-49023",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:known_affected": "42",
"product_status:known_not_affected": "156",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: wifi: cfg80211: fix buffer overflow in elem comparison",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49023.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-11T02:31:38Z",
"cve": "CVE-2022-49023",
"id": "CVE-2022-49023",
"initial_release_date": "2024-10-22T14:22:04Z",
"product_status:known_affected": "328",
"product_status:known_not_affected": "310",
"product_status:recommended": "523",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2022-49023",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49023.json",
"version": "49"
},
"vulnrichment": {
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success does not depend on races or unpredictable victim state beyond ordinary Wi\\u2011Fi reception/scanning.\\nPR:N - Frames are processed in the unauthenticated scan/MLME RX path before any association or credentials; no local account or capability is required.\\nUI:N - cfg80211/mac80211 ingest these management frames during normal scanning and BSS updates without requiring a deliberate user action beyond having Wi\\u2011Fi operating.\\nS:U - Impact remains within the local kernel\\u2019s BSS/IE handling authority; there is no VM, IOMMU, or other security-authority boundary crossing.\\nC:L - The defect is a strictly bounded out-of-bounds read of at most 5 bytes used only for vendor-IE matching (small bounded OOB read), not an arbitrary read primitive, so confidentiality impact is Low rather than High.\\nI:N - The buggy access is a read-only memcmp; subsequent memcpy lengths still follow validated IE length fields, so this CVE does not provide a write or control-flow integrity primitive.\\nA:H - Reading past the end of a kmemdup/slab IE buffer is a memory-safety violation that can fault or oops when the short vendor IE sits at the allocation boundary, so availability impact is High.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"0b8fb8235be8be99a197e8d948fc0a2df8dc261a\", \"lessThan\": \"f5c2ec288a865dbe3706b09bed12302e9f6d696b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0b8fb8235be8be99a197e8d948fc0a2df8dc261a\", \"lessThan\": \"9e6b79a3cd17620d467311b30d56f2648f6880aa\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0b8fb8235be8be99a197e8d948fc0a2df8dc261a\", \"lessThan\": \"88a6fe3707888bd1893e9741157a7035c4159ab6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0b8fb8235be8be99a197e8d948fc0a2df8dc261a\", \"lessThan\": \"391cb872553627bdcf236c03ee7d5adb275e37e1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0b8fb8235be8be99a197e8d948fc0a2df8dc261a\", \"lessThan\": \"9f16b5c82a025cd4c864737409234ddc44fb166a\", \"versionType\": \"git\"}], \"programFiles\": [\"net/wireless/scan.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.1\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.1\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.226\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.158\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.82\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/wireless/scan.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f5c2ec288a865dbe3706b09bed12302e9f6d696b\"}, {\"url\": \"https://git.kernel.org/stable/c/9e6b79a3cd17620d467311b30d56f2648f6880aa\"}, {\"url\": \"https://git.kernel.org/stable/c/88a6fe3707888bd1893e9741157a7035c4159ab6\"}, {\"url\": \"https://git.kernel.org/stable/c/391cb872553627bdcf236c03ee7d5adb275e37e1\"}, {\"url\": \"https://git.kernel.org/stable/c/9f16b5c82a025cd4c864737409234ddc44fb166a\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: cfg80211: fix buffer overflow in elem comparison\\n\\nFor vendor elements, the code here assumes that 5 octets\\nare present without checking. Since the element itself is\\nalready checked to fit, we only need to check the length.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.226\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.158\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.82\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.12\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1\", \"versionStartIncluding\": \"5.1\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:53:30.326Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2022-49023\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:53:30.326Z\", \"dateReserved\": \"2024-08-22T01:27:53.649Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T20:06:29.901Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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