Vulnerability-Lookup

GHSA-4Q5V-2RW8-85RJ

Vulnerability from github – Published: 2024-10-21 21:30 – Updated: 2024-10-24 06:30

Details

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

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49023"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T20:15:13Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-4q5v-2rw8-85rj",
  "modified": "2024-10-24T06:30:29Z",
  "published": "2024-10-21T21:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49023"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/391cb872553627bdcf236c03ee7d5adb275e37e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88a6fe3707888bd1893e9741157a7035c4159ab6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e6b79a3cd17620d467311b30d56f2648f6880aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f16b5c82a025cd4c864737409234ddc44fb166a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5c2ec288a865dbe3706b09bed12302e9f6d696b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49023 (GCVE-0-2022-49023)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2026-08-05 08:53

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)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-22 13:12 UTC

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/f5c2ec288a865dbe3…
https://git.kernel.org/stable/c/9e6b79a3cd17620d4…
https://git.kernel.org/stable/c/88a6fe3707888bd18…
https://git.kernel.org/stable/c/391cb872553627bdc…
https://git.kernel.org/stable/c/9f16b5c82a025cd4c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0b8fb8235be8be99a197e8d948fc0a2df8dc261a , < f5c2ec288a865dbe3706b09bed12302e9f6d696b (git) Affected: 0b8fb8235be8be99a197e8d948fc0a2df8dc261a , < 9e6b79a3cd17620d467311b30d56f2648f6880aa (git) Affected: 0b8fb8235be8be99a197e8d948fc0a2df8dc261a , < 88a6fe3707888bd1893e9741157a7035c4159ab6 (git) Affected: 0b8fb8235be8be99a197e8d948fc0a2df8dc261a , < 391cb872553627bdcf236c03ee7d5adb275e37e1 (git) Affected: 0b8fb8235be8be99a197e8d948fc0a2df8dc261a , < 9f16b5c82a025cd4c864737409234ddc44fb166a (git)
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)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-49023",
                "options": [
                  {
                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:12:18.800355Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:18:36.843Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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              "status": "affected",
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.1"
            },
            {
              "lessThan": "5.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.226",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.82",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.12",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
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      ],
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          "nodes": [
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                {
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                  "versionEndExcluding": "5.10.158",
                  "versionStartIncluding": "5.1",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.82",
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
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          "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."
        }
      ],
      "metrics": [
        {
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The bug is reached by injecting crafted 802.11 Beacon/Probe Response frames with Multiple BSSID elements containing short vendor IEs; exploitation requires adjacency on the Wi\u2011Fi RF segment, matching WiFi frame-injection guidance.\nAC:L - An attacker fully controls frame contents and can reliably include a vendor IE with length \u003c 5 in both the transmitted BSS IEs and an MBSSID nontransmitted profile; 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."
            }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "dateReserved": "2024-08-22T01:27:53.649Z",
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    "state": "PUBLISHED"
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}

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.

Detection rules are retrieved from Rulezet.

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.

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.