CVE-2026-98327

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: reset the CSA state when leaving ifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed in ieee80211_mesh_finish_csa(), i.e. when the channel switch completes. Leaving the mesh while a switch is still pending therefore leaks it. Additionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak in this case, so things can get mixed up in addition to the memory leak. Refactor the reset and call it in ieee80211_stop_mesh() to fix it all.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

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

Published

2026-10-06 09:18:24.980000

Last modified

2026-10-19 10:18:34.890000

View original CVE JSON

{
  "id": "CVE-2026-98327",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-10-06T09:18:24.980",
  "lastModified": "2026-10-19T10:18:34.890",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: reset the CSA state when leaving\n\nifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed\nin ieee80211_mesh_finish_csa(), i.e. when the channel switch completes.\nLeaving the mesh while a switch is still pending therefore leaks it.\n\nAdditionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak\nin this case, so things can get mixed up in addition to the memory\nleak.\n\nRefactor the reset and call it in ieee80211_stop_mesh() to fix it all."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "net/mac80211/mesh.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "b8456a14e9d2770846fcf74de18ff95b676149a3",
              "lessThan": "aba8dfb45864441199748c33ce3c1c8ca121c8bd",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "b8456a14e9d2770846fcf74de18ff95b676149a3",
              "lessThan": "bd3b21145ae2e781daac1bbd19216a63ab4e0cbd",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "b8456a14e9d2770846fcf74de18ff95b676149a3",
              "lessThan": "ba5bf83a81e8832cb84bb3a2da67512f81f57a02",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "b8456a14e9d2770846fcf74de18ff95b676149a3",
              "lessThan": "860134b3af77970e006feab7e5decb8c84771c7f",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "net/mac80211/mesh.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "3.13",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "3.13",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.112",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.54",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.8",
              "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/860134b3af77970e006feab7e5decb8c84771c7f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/aba8dfb45864441199748c33ce3c1c8ca121c8bd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ba5bf83a81e8832cb84bb3a2da67512f81f57a02",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bd3b21145ae2e781daac1bbd19216a63ab4e0cbd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}