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wifi: cfg80211: cancel sched scan results work on unregister

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: cancel sched scan results work on unregister cfg80211_sched_scan_results() can queue rdev->sched_scan_res_wk from a driver result notification while a scheduled scan request is present. The work callback recovers the containing cfg80211_registered_device and then locks the wiphy and walks the scheduled-scan request list. wiphy_unregister() already makes the wiphy unreachable and drains rdev work items before cfg80211_dev_free() can release the object, but it does not drain sched_scan_res_wk. A queued or running result work item can therefore cross the unregister/free boundary and access freed rdev state. The buggy scenario involves two paths, with each column showing the order within that path: scheduled-scan result path: unregister/free path: 1. cfg80211_sched_scan_results() 1. interface teardown stops and queues rdev->sched_scan_res_wk. removes the scheduled scan request. 2. cfg80211_wq starts the work 2. wiphy_unregister() drains other item and recovers rdev. rdev work items. 3. The worker locks rdev->wiphy 3. cfg80211_dev_free() destroys and and walks rdev state. frees rdev. Cancel sched_scan_res_wk in wiphy_unregister() alongside the other rdev work items. cancel_work_sync() removes a pending result notification and waits for an already running callback, so cfg80211_dev_free() cannot free rdev while this work item is still active. Validation reproduced this kernel report: BUG: KASAN: use-

Announced Source revision 1
Original source ↗

CVE-2026-68414

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-68414

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "807f8a8c300435d5483e8d78df9dcdbc27333166",
        "lessThan": "c0fa1f3a4b021a5c6373169fd6c9bb4261d676a0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "807f8a8c300435d5483e8d78df9dcdbc27333166",
        "lessThan": "b51b42b974461fd0f688baad85f10e2b8ab215c5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "807f8a8c300435d5483e8d78df9dcdbc27333166",
        "lessThan": "3368457b4871ae8f0f88d19c9a3e6270e850ede6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "807f8a8c300435d5483e8d78df9dcdbc27333166",
        "lessThan": "308ffdf575560d7e7b8b21f1e3ca6276630f73bf",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "807f8a8c300435d5483e8d78df9dcdbc27333166",
        "lessThan": "9293574ac208d18c11073538851fb69355beb3b5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "807f8a8c300435d5483e8d78df9dcdbc27333166",
        "lessThan": "b119c70b24776c8ab2a2c0515397b3b0ad4e66cd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "807f8a8c300435d5483e8d78df9dcdbc27333166",
        "lessThan": "edf0730be33696a1bd142792830d392129e495cc",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/wireless/core.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.0"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.0",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.15.216",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.183",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.148",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.101",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.42",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/wireless/core.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-68414

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#41719 · Revision 1
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Publisher date
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