CVE-2026-98702

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: reject invalid 320 MHz CSA bandwidth The HT/VHT channel definition validator can receive a 320 MHz bandwidth indication from a received CSA frame on a non-6 GHz link. It warns for this unsupported width but continues with an uninitialized vht_operation.chan_width, which is then read by ieee80211_chandef_vht_oper(). With panic_on_warn enabled, this lets a received frame panic the kernel. Reject the channel definition before entering the VHT operation conversion. This preserves the existing CSA fallback while avoiding both the warning and the uninitialized read.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-10-18 16:17:23.700000

Last modified

2026-10-19 10:19:34.500000

View original CVE JSON

{
  "id": "CVE-2026-98702",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-10-18T16:17:23.700",
  "lastModified": "2026-10-19T10:19:34.500",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reject invalid 320 MHz CSA bandwidth\n\nThe HT/VHT channel definition validator can receive a 320 MHz\nbandwidth indication from a received CSA frame on a non-6 GHz link.\nIt warns for this unsupported width but continues with an uninitialized\nvht_operation.chan_width, which is then read by\nieee80211_chandef_vht_oper(). With panic_on_warn enabled, this lets a\nreceived frame panic the kernel.\n\nReject the channel definition before entering the VHT operation\nconversion. This preserves the existing CSA fallback while avoiding\nboth the warning and the uninitialized read."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "net/mac80211/spectmgmt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "21c3f8f95554feff9bed15703e89adbe582e0383",
              "lessThan": "cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "21c3f8f95554feff9bed15703e89adbe582e0383",
              "lessThan": "1892e71aa2e5ee667d87c6e49e3661f5e290303b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "21c3f8f95554feff9bed15703e89adbe582e0383",
              "lessThan": "79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "21c3f8f95554feff9bed15703e89adbe582e0383",
              "lessThan": "56e236759f0a8dc910c2ae7cd3c161f298ee5794",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "net/mac80211/spectmgmt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.9",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.9",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.113",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.56",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.10",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1892e71aa2e5ee667d87c6e49e3661f5e290303b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/56e236759f0a8dc910c2ae7cd3c161f298ee5794",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}