{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d889913205cf7ebda905b1e62c5867ed4e39f6c2"
            },
            {
              "fixed": "d3355e0fdbbf531ca8b82a6a3feb80a1b7306a8b"
            },
            {
              "fixed": "b9a5d12cbdeb860306f8d47c92caee0ea6ee0e0a"
            },
            {
              "fixed": "26f8f87f0a556e7984366c64cebc16d49e15d22f"
            },
            {
              "fixed": "4c6eb712a91fa079be6f9f1419c96e0ad2227081"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.3.0"
            },
            {
              "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/2026/90xxx/CVE-2026-90399.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: fix stride mismatch in mac_phy_caps_parse()\n\nCurrently, in ath12k_wmi_mac_phy_caps_parse(), kzalloc() sizes the\nmac_phy_caps buffer as tot_phy_id * len, where len is clamped to\nmin(firmware_len, sizeof(struct ath12k_wmi_mac_phy_caps_params)). The\nsubsequent memcpy() destination advances by sizeof(full struct) per slot\nvia C pointer arithmetic, not by the clamped len. When firmware sends\nshort TLVs, the second and later slots are written past the end of the\nallocation.\n\nThe reader in ath12k_pull_mac_phy_cap_svc_ready_ext() also indexes the\nbuffer with full-struct pointer arithmetic, so the allocation must match\nthat stride.\n\nFix by using kzalloc_objs(), which derives the element size from the\npointer type, making allocation size and pointer stride provably\nconsistent regardless of what len the firmware provides.\n\nTested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c7-00108-QCAHMTSWPL_V1.0_V2.0_SILICONZ_UPSTREAM-3",
  "id": "CVE-2026-90399",
  "modified": "2026-09-19T03:30:14.320376838Z",
  "published": "2026-09-17T16:09:30.273Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26f8f87f0a556e7984366c64cebc16d49e15d22f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4c6eb712a91fa079be6f9f1419c96e0ad2227081"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9a5d12cbdeb860306f8d47c92caee0ea6ee0e0a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3355e0fdbbf531ca8b82a6a3feb80a1b7306a8b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90399.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90399"
    },
    {
      "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:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wifi: ath12k: fix stride mismatch in mac_phy_caps_parse()"
}