{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ee16dcf573d5e3283fda601dd4bca6bc52251017"
            },
            {
              "fixed": "234b5cb81e6fcc1e3b31b13deff66130be55f36e"
            },
            {
              "fixed": "47abd2ca281531deee38a3b3770d885e270e9fc9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.0.0"
            },
            {
              "fixed": "7.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74554.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: fix out-of-bounds clear_bit in ath12k_mac_dp_peer_cleanup()\n\nath12k_mac_dp_peer_cleanup() clears the ML peer ID slot on the\nfree_ml_peer_id_map bitmap by indexing it with dp_peer-\u003epeer_id. That is\nwrong: dp_peer-\u003epeer_id for an MLO peer always carries the\nATH12K_PEER_ML_ID_VALID bit (BIT(13)), so clear_bit() is invoked with\nindex \u003e= 0x2000, which is far outside the bitmap of ATH12K_MAX_MLO_PEERS\n(256) bits and corrupts memory adjacent to ah-\u003efree_ml_peer_id_map. The\nintended bitmap entry also never gets cleared, so subsequent\nath12k_peer_ml_alloc() calls eventually run out of IDs.\n\nThe ID without the VALID bit is what ath12k_peer_ml_alloc() returned and\nis stored in ahsta-\u003eml_peer_id. Use that instead.\n\nWhile there, also reset ahsta-\u003eml_peer_id to ATH12K_MLO_PEER_ID_INVALID so\nthe bitmap and ahsta-\u003eml_peer_id stay in sync.\n\nTested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00302-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.115823.3",
  "id": "CVE-2026-74554",
  "modified": "2026-08-18T03:30:54.923561707Z",
  "published": "2026-08-15T12:28:00.097Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/234b5cb81e6fcc1e3b31b13deff66130be55f36e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/47abd2ca281531deee38a3b3770d885e270e9fc9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74554.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74554"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wifi: ath12k: fix out-of-bounds clear_bit in ath12k_mac_dp_peer_cleanup()"
}