FKIE_CVE-2026-98706

Vulnerability from fkie_nvd - Published: 2026-10-18 16:17 - Updated: 2026-10-30 13:21
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: drain PS delivery work during station teardown Removing an AP or mesh station can notify the driver and wake TXQs after the station has already been removed from the driver, and can update num_sta_ps and the power-save queues after station cleanup has purged them. sta_deliver_ps_frames() tests sta->dead only before it starts delivery. A worker that passes that test can be delayed while teardown sets sta->dead and removes the station from the driver; when it resumes it still runs the full delivery. The existing cancel_work_sync() sits near the end of __cleanup_single_sta(), after the final driver state transition and after PS accounting and queue purging, so it drains the worker only once the state it has to protect has already changed. Before commit d34ba2168a3c ("mac80211: don't delay station destruction") cleanup was deferred through the same ordered workqueue as the delivery work, which kept the two ordered. Cancel the work after setting sta->dead and before moving the driver state, and move the existing cancellation to the start of __cleanup_single_sta(). The first drain closes the driver-lifetime window; driver callbacks during the remaining state transitions can still queue drv_deliver_wk through ieee80211_sta_block_awake(), so retain the second drain at the start of __cleanup_single_sta(). That drain also covers insertion failures, which reach cleanup without setting sta->dead.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/01292d4c491b9b78c23cde3c5eaa9fb8c8e241f8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/086e7aebd3a9f91435cac348828a339e1070b188
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/097460fcdd8ab9ef6f6018b2fdc29ba0ea499298
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/67a9e80c3ca20c9044cd6ee72cd6278dd19b5023
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/772bd89304ecf057cc51ce4ce24a1a96ac9c8de3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/843d3a1e6f25027ac85f88f67b95d82c67306dee
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cbff71fe689f359ebd6a3eaded035ef75226afce
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dedae75046c47d191b9ffe3771c09281a9a94fba
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/sta_info.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "01292d4c491b9b78c23cde3c5eaa9fb8c8e241f8",
              "status": "affected",
              "version": "d34ba2168a3c10e7301cca06069c39865b4c3ec6",
              "versionType": "git"
            },
            {
              "lessThan": "dedae75046c47d191b9ffe3771c09281a9a94fba",
              "status": "affected",
              "version": "d34ba2168a3c10e7301cca06069c39865b4c3ec6",
              "versionType": "git"
            },
            {
              "lessThan": "086e7aebd3a9f91435cac348828a339e1070b188",
              "status": "affected",
              "version": "d34ba2168a3c10e7301cca06069c39865b4c3ec6",
              "versionType": "git"
            },
            {
              "lessThan": "cbff71fe689f359ebd6a3eaded035ef75226afce",
              "status": "affected",
              "version": "d34ba2168a3c10e7301cca06069c39865b4c3ec6",
              "versionType": "git"
            },
            {
              "lessThan": "843d3a1e6f25027ac85f88f67b95d82c67306dee",
              "status": "affected",
              "version": "d34ba2168a3c10e7301cca06069c39865b4c3ec6",
              "versionType": "git"
            },
            {
              "lessThan": "772bd89304ecf057cc51ce4ce24a1a96ac9c8de3",
              "status": "affected",
              "version": "d34ba2168a3c10e7301cca06069c39865b4c3ec6",
              "versionType": "git"
            },
            {
              "lessThan": "097460fcdd8ab9ef6f6018b2fdc29ba0ea499298",
              "status": "affected",
              "version": "d34ba2168a3c10e7301cca06069c39865b4c3ec6",
              "versionType": "git"
            },
            {
              "lessThan": "67a9e80c3ca20c9044cd6ee72cd6278dd19b5023",
              "status": "affected",
              "version": "d34ba2168a3c10e7301cca06069c39865b4c3ec6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/sta_info.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.14"
            },
            {
              "lessThan": "3.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.273",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.224",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: drain PS delivery work during station teardown\n\nRemoving an AP or mesh station can notify the driver and wake TXQs after\nthe station has already been removed from the driver, and can update\nnum_sta_ps and the power-save queues after station cleanup has purged\nthem.\n\nsta_deliver_ps_frames() tests sta-\u003edead only before it starts delivery. A\nworker that passes that test can be delayed while teardown sets sta-\u003edead\nand removes the station from the driver; when it resumes it still runs the\nfull delivery.\n\nThe existing cancel_work_sync() sits near the end of\n__cleanup_single_sta(), after the final driver state transition and after\nPS accounting and queue purging, so it drains the worker only once the\nstate it has to protect has already changed. Before commit d34ba2168a3c\n(\"mac80211: don\u0027t delay station destruction\") cleanup was deferred\nthrough the same ordered workqueue as the delivery work, which kept the\ntwo ordered.\n\nCancel the work after setting sta-\u003edead and before moving the driver\nstate, and move the existing cancellation to the start of\n__cleanup_single_sta(). The first drain closes the driver-lifetime window;\ndriver callbacks during the remaining state transitions can still queue\ndrv_deliver_wk through ieee80211_sta_block_awake(), so retain the second\ndrain at the start of __cleanup_single_sta(). That drain also covers\ninsertion failures, which reach cleanup without setting sta-\u003edead."
    }
  ],
  "id": "CVE-2026-98706",
  "lastModified": "2026-10-30T13:21:19.890",
  "metrics": {},
  "published": "2026-10-18T16:17:24.117",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/01292d4c491b9b78c23cde3c5eaa9fb8c8e241f8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/086e7aebd3a9f91435cac348828a339e1070b188"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/097460fcdd8ab9ef6f6018b2fdc29ba0ea499298"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/67a9e80c3ca20c9044cd6ee72cd6278dd19b5023"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/772bd89304ecf057cc51ce4ce24a1a96ac9c8de3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/843d3a1e6f25027ac85f88f67b95d82c67306dee"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cbff71fe689f359ebd6a3eaded035ef75226afce"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dedae75046c47d191b9ffe3771c09281a9a94fba"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.