CVE-2026-98329 (GCVE-0-2026-98329)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:46 – Updated: 2026-10-06 08:46
VLAI
Title
wifi: mac80211: don't allow injecting frames wider than the chanctx
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: don't allow injecting frames wider than the chanctx Frames injected on a monitor interface can carry a radiotap field requesting a bandwidth, which mac80211 passes down to the driver regardless of the the actual operational bandwidth. If the bandwidth requested is too wide, that triggers a warning in hwsim: WARN_ON(hwsim_get_chanwidth(bw) > hwsim_get_chanwidth(confbw)) Drop such frames entirely instead since they cannot be sent.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 646e76bb5daf4ca38438c69ffb72cccb605f3466 , < a5c715eda066cba5ce3372759188ba8636dca629 (git)
Affected: 646e76bb5daf4ca38438c69ffb72cccb605f3466 , < 73f48f7e16cadfc74f444ccd10c1d3ae253e2e27 (git)
Affected: 646e76bb5daf4ca38438c69ffb72cccb605f3466 , < c69718519a81e87284494d0c6e6eb7bdd834707a (git)
Affected: 646e76bb5daf4ca38438c69ffb72cccb605f3466 , < e14bf37bb2b3853012ff160131d1c6233f7a9cc9 (git)
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Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "include/net/mac80211.h",
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: don\u0027t allow injecting frames wider than the chanctx\n\nFrames injected on a monitor interface can carry a radiotap\nfield requesting a bandwidth, which mac80211 passes down to\nthe driver regardless of the the actual operational bandwidth.\n\nIf the bandwidth requested is too wide, that triggers a warning\nin hwsim:\n\n  WARN_ON(hwsim_get_chanwidth(bw) \u003e hwsim_get_chanwidth(confbw))\n\nDrop such frames entirely instead since they cannot be sent."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T08:46:21.887Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98329",
    "datePublished": "2026-10-06T08:46:21.887Z",
    "dateReserved": "2026-09-25T10:25:14.341Z",
    "dateUpdated": "2026-10-06T08:46:21.887Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-10-09",
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      "percentile": "0.06436"
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                  "net/mac80211/tx.c"
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            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: don\u0027t allow injecting frames wider than the chanctx\n\nFrames injected on a monitor interface can carry a radiotap\nfield requesting a bandwidth, which mac80211 passes down to\nthe driver regardless of the the actual operational bandwidth.\n\nIf the bandwidth requested is too wide, that triggers a warning\nin hwsim:\n\n  WARN_ON(hwsim_get_chanwidth(bw) \u003e hwsim_get_chanwidth(confbw))\n\nDrop such frames entirely instead since they cannot be sent."
          }
        ],
        "id": "CVE-2026-98329",
        "lastModified": "2026-10-06T09:18:25.250",
        "metrics": {},
        "published": "2026-10-06T09:18:25.250",
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      "product_status:known_affected": "295",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98329",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-98329.json",
      "version": "2"
    }
  }
}



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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

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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.



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.