{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "bd18de517923903a177508fc8813f44e717b1c00"
            },
            {
              "fixed": "d131027054a8dd922dda01fe8d381abe5af4970b"
            },
            {
              "fixed": "c40ba47f2ba1951cb32ea048667ed014d36a5749"
            },
            {
              "fixed": "2817431a61557f46dc63077b7cc126bc906c242e"
            },
            {
              "fixed": "e7fccad2c8e6ef6bbafe509c95869d161d0f466b"
            },
            {
              "fixed": "1c2a4ab6efa26415dd131b8c222e7893fda03435"
            },
            {
              "fixed": "158438cd6ad69d6dd7d871582c38baf22169fede"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "78bf3c6131488b00386acd9aff1ea4e6c44fa38e"
            },
            {
              "last_affected": "a9028333001f793b2724e8be42fce3336de2cf1c"
            },
            {
              "last_affected": "7019c9f385b264a2d6f685028268422d55087e37"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.4.129"
            },
            {
              "fixed": "5.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.10.47"
            },
            {
              "fixed": "5.11"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.12.14"
            },
            {
              "fixed": "5.13"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.13.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93149.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: avoid NULL skb in stop queue drain\n\nmac80211_hwsim_stop() drops any frames left in data-\u003epending. The loop\ncurrently checks skb_queue_empty() and then dequeues separately.\n\nThat split is racy with TX status handling, which can remove a pending\nframe under the queue lock. If the last entry is removed after the empty\ncheck, skb_dequeue() returns NULL and the stop path passes that NULL skb\nto ieee80211_free_txskb().\n\nUse skb_dequeue() as the loop condition instead. The dequeue result is the\nobject that stop owns and frees, and a concurrent status completion that\nempties the queue simply makes the loop terminate.",
  "id": "CVE-2026-93149",
  "modified": "2026-09-19T03:30:52.050346351Z",
  "published": "2026-09-17T16:11:46.136Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/158438cd6ad69d6dd7d871582c38baf22169fede"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c2a4ab6efa26415dd131b8c222e7893fda03435"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2817431a61557f46dc63077b7cc126bc906c242e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c40ba47f2ba1951cb32ea048667ed014d36a5749"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d131027054a8dd922dda01fe8d381abe5af4970b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7fccad2c8e6ef6bbafe509c95869d161d0f466b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93149.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93149"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "wifi: mac80211_hwsim: avoid NULL skb in stop queue drain"
}