CVE-2026-98706 (GCVE-0-2026-98706)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:46 – Updated: 2026-10-21 12:55
VLAI
Title
wifi: mac80211: drain PS delivery work during station teardown
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7067 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d34ba2168a3c10e7301cca06069c39865b4c3ec6 , < cbff71fe689f359ebd6a3eaded035ef75226afce (git)
Affected: d34ba2168a3c10e7301cca06069c39865b4c3ec6 , < 843d3a1e6f25027ac85f88f67b95d82c67306dee (git)
Affected: d34ba2168a3c10e7301cca06069c39865b4c3ec6 , < 772bd89304ecf057cc51ce4ce24a1a96ac9c8de3 (git)
Affected: d34ba2168a3c10e7301cca06069c39865b4c3ec6 , < 097460fcdd8ab9ef6f6018b2fdc29ba0ea499298 (git)
Affected: d34ba2168a3c10e7301cca06069c39865b4c3ec6 , < 67a9e80c3ca20c9044cd6ee72cd6278dd19b5023 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.14
Unaffected: 0 , < 3.14 (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.113 , ≤ 6.12.* (semver)
Unaffected: 6.18.56 , ≤ 6.18.* (semver)
Unaffected: 7.2.10 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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": "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": "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.160",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.113",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.56",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.10",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:55:54.972Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cbff71fe689f359ebd6a3eaded035ef75226afce"
        },
        {
          "url": "https://git.kernel.org/stable/c/843d3a1e6f25027ac85f88f67b95d82c67306dee"
        },
        {
          "url": "https://git.kernel.org/stable/c/772bd89304ecf057cc51ce4ce24a1a96ac9c8de3"
        },
        {
          "url": "https://git.kernel.org/stable/c/097460fcdd8ab9ef6f6018b2fdc29ba0ea499298"
        },
        {
          "url": "https://git.kernel.org/stable/c/67a9e80c3ca20c9044cd6ee72cd6278dd19b5023"
        }
      ],
      "title": "wifi: mac80211: drain PS delivery work during station teardown",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98706",
    "datePublished": "2026-10-18T15:46:36.328Z",
    "dateReserved": "2026-09-25T10:25:14.365Z",
    "dateUpdated": "2026-10-21T12:55:54.972Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-98706",
      "date": "2026-10-26",
      "epss": "0.00168",
      "percentile": "0.05981"
    },
    "microsoft_vex": {
      "current_release_date": "2026-10-21T18:41:01.000Z",
      "cve": "CVE-2026-98706",
      "id": "msrc_CVE-2026-98706",
      "initial_release_date": "2026-10-20T01:04:12.000Z",
      "product_status:known_affected": "1",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "wifi: mac80211: drain PS delivery work during station teardown",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98706.json",
      "version": "3"
    },
    "nvd": {
      "cve": {
        "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": "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": "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": "2026-10-21T13:21:38.920",
        "metrics": {},
        "published": "2026-10-18T16:17:24.117",
        "references": [
          {
            "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"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-22T20:43:18+00:00",
      "cve": "CVE-2026-98706",
      "id": "CVE-2026-98706",
      "initial_release_date": "2026-10-18T00:00:00+00:00",
      "product_status:known_affected": "250",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: mac80211: drain PS delivery work during station teardown",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98706.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-22T23:46:30Z",
      "cve": "CVE-2026-98706",
      "id": "CVE-2026-98706",
      "initial_release_date": "2026-10-22T16:35:29Z",
      "product_status:known_affected": "145",
      "product_status:known_not_affected": "203",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98706",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98706.json",
      "version": "3"
    }
  }
}



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.