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GHSA-5X9J-5X5G-GR56

Vulnerability from github – Published: 2026-09-24 18:31 – Updated: 2026-09-24 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

wifi: rsi: validate beacon length before fixed buffer copy

rsi_prepare_beacon() copies the mac80211 beacon frame after FRAME_DESC_SZ into a management skb whose usable tailroom may be smaller than MAX_MGMT_PKT_SIZE after alignment.

Validate the beacon length against the actual tailroom before the copy and skb_put(). Leave ownership of the management skb with the caller on error, matching the existing rsi_send_beacon() cleanup path.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-93802"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-24T17:17:13Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rsi: validate beacon length before fixed buffer copy\n\nrsi_prepare_beacon() copies the mac80211 beacon frame after\nFRAME_DESC_SZ into a management skb whose usable tailroom may be smaller\nthan MAX_MGMT_PKT_SIZE after alignment.\n\nValidate the beacon length against the actual tailroom before the copy\nand skb_put(). Leave ownership of the management skb with the caller on\nerror, matching the existing rsi_send_beacon() cleanup path.",
  "id": "GHSA-5x9j-5x5g-gr56",
  "modified": "2026-09-24T18:31:29Z",
  "published": "2026-09-24T18:31:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93802"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/266f195d5a14eec6c482fd09fbc924584c3371a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87710ad633ce4588aec88611d0d0745eb33a6991"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ecdeb8b8a33b22c597299043c0dcfce50beb9ea"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-93802 (GCVE-0-2026-93802)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:02 – Updated: 2026-09-25 12:43

Title

wifi: rsi: validate beacon length before fixed buffer copy

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: validate beacon length before fixed buffer copy rsi_prepare_beacon() copies the mac80211 beacon frame after FRAME_DESC_SZ into a management skb whose usable tailroom may be smaller than MAX_MGMT_PKT_SIZE after alignment. Validate the beacon length against the actual tailroom before the copy and skb_put(). Leave ownership of the management skb with the caller on error, matching the existing rsi_send_beacon() cleanup path.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/87710ad633ce4588a…
https://git.kernel.org/stable/c/266f195d5a14eec6c…
https://git.kernel.org/stable/c/8ecdeb8b8a33b22c5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d26a9559403c7c3ec3b430f5825bc22c3d40abdb , < 87710ad633ce4588aec88611d0d0745eb33a6991 (git) Affected: d26a9559403c7c3ec3b430f5825bc22c3d40abdb , < 266f195d5a14eec6c482fd09fbc924584c3371a7 (git) Affected: d26a9559403c7c3ec3b430f5825bc22c3d40abdb , < 8ecdeb8b8a33b22c597299043c0dcfce50beb9ea (git)
Linux	Linux	Affected: 4.14 Unaffected: 0 , < 4.14 (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/net/wireless/rsi/rsi_91x_hal.c"
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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.

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.
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GHSA-5X9J-5X5G-GR56

CVE-2026-93802 (GCVE-0-2026-93802)

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