{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2"
            },
            {
              "fixed": "28d3551f8d8cb3aec7497894d94150fe84d20e5e"
            },
            {
              "fixed": "37e776e2e0a523731e2470dce6d563f0e8632a40"
            },
            {
              "fixed": "d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa"
            },
            {
              "fixed": "a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf"
            },
            {
              "fixed": "72b7ea786b8e570ae11149e9089859a4a8634a13"
            },
            {
              "fixed": "6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "6.1.167"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.130"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.78"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.20"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31548.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down\n\nWhen the nl80211 socket that originated a PMSR request is\nclosed, cfg80211_release_pmsr() sets the request's nl_portid\nto zero and schedules pmsr_free_wk to process the abort\nasynchronously. If the interface is concurrently torn down\nbefore that work runs, cfg80211_pmsr_wdev_down() calls\ncfg80211_pmsr_process_abort() directly. However, the already-\nscheduled pmsr_free_wk work item remains pending and may run\nafter the interface has been removed from the driver. This\ncould cause the driver's abort_pmsr callback to operate on a\ntorn-down interface, leading to undefined behavior and\npotential crashes.\n\nCancel pmsr_free_wk synchronously in cfg80211_pmsr_wdev_down()\nbefore calling cfg80211_pmsr_process_abort(). This ensures any\npending or in-progress work is drained before interface teardown\nproceeds, preventing the work from invoking the driver abort\ncallback after the interface is gone.",
  "id": "CVE-2026-31548",
  "modified": "2026-07-15T01:49:07.076918671Z",
  "published": "2026-04-24T14:33:16.021Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/28d3551f8d8cb3aec7497894d94150fe84d20e5e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/37e776e2e0a523731e2470dce6d563f0e8632a40"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72b7ea786b8e570ae11149e9089859a4a8634a13"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31548.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31548"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down"
}