{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "06be6b149f7e406bcf16098567f5a6c9f042bced"
            },
            {
              "fixed": "905ef207d5ed99ca64adfe39fba9ac46e434327a"
            },
            {
              "fixed": "5ef8ca1c164786da24169af155c1ca1ff1353cf8"
            },
            {
              "fixed": "9a779d1f480e83720b5384adf165604e7ee226bd"
            },
            {
              "fixed": "f77b51bcee7be2bb686b5f7a2d4a1921e4bdb9f4"
            },
            {
              "fixed": "3b4d27acafaeab478fd24f79ad6e593a892828b9"
            },
            {
              "fixed": "06e769dddcbeb3baf2ce346273b53dd61fdbecf4"
            },
            {
              "fixed": "50f1b690b4868923fbd242298def2fb88662f108"
            },
            {
              "fixed": "d5ad6ab61cbd89afdb60881f6274f74328af3ee9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.13.0"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.136"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.84"
            }
          ],
          "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/2026/23xxx/CVE-2026-23444.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: always free skb on ieee80211_tx_prepare_skb() failure\n\nieee80211_tx_prepare_skb() has three error paths, but only two of them\nfree the skb. The first error path (ieee80211_tx_prepare() returning\nTX_DROP) does not free it, while invoke_tx_handlers() failure and the\nfragmentation check both do.\n\nAdd kfree_skb() to the first error path so all three are consistent,\nand remove the now-redundant frees in callers (ath9k, mt76,\nmac80211_hwsim) to avoid double-free.\n\nDocument the skb ownership guarantee in the function's kdoc.",
  "id": "CVE-2026-23444",
  "modified": "2026-07-08T05:38:58.085104515Z",
  "published": "2026-04-03T15:15:28.464Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06e769dddcbeb3baf2ce346273b53dd61fdbecf4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3b4d27acafaeab478fd24f79ad6e593a892828b9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50f1b690b4868923fbd242298def2fb88662f108"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5ef8ca1c164786da24169af155c1ca1ff1353cf8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/905ef207d5ed99ca64adfe39fba9ac46e434327a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a779d1f480e83720b5384adf165604e7ee226bd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5ad6ab61cbd89afdb60881f6274f74328af3ee9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f77b51bcee7be2bb686b5f7a2d4a1921e4bdb9f4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23444.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23444"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "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: mac80211: always free skb on ieee80211_tx_prepare_skb() failure"
}