{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "554c0a3abf216c991c5ebddcdb2c08689ecd290b"
            },
            {
              "fixed": "5e8db4cff5b45c7c4edc8ae3f302027c3bb32b25"
            },
            {
              "fixed": "6dd5e8c3011ebabf417257d7f07901a7c4311539"
            },
            {
              "fixed": "9193c34f75fd9e1ea8a590d7cced464c3380dc29"
            },
            {
              "fixed": "bd953d52d587d42365e399b96c52dbdb13032070"
            },
            {
              "fixed": "69f174a0673b6b7a29b851adb60bc450cdc0ecc4"
            },
            {
              "fixed": "b5cc2f999927f69723ca53f1f2a3aa37dbeda907"
            },
            {
              "fixed": "ed51de4a86e173c3b0ef78e039c2e49e08b11f16"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.12.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.96"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64443.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix OOB read in update_beacon_info() IE loop\n\nThe IE parsing loop in update_beacon_info() advances by\n(pIE-\u003elength + 2) each iteration but only guards on i \u003c len.\nWhen a malicious AP sends a Beacon whose last IE has only one byte\nremaining in the frame (the element_id byte lands at len-1), the loop\nreads pIE-\u003elength from one byte past the allocated receive buffer.\n\nAdditionally, even when the header bytes are in bounds, pIE-\u003elength\nitself can extend the data window beyond len, passing a truncated IE\nto the handler functions.\n\nAdd two guards at the top of the loop body:\n  1. Break if fewer than sizeof(*pIE) bytes remain (can't read header).\n  2. Break if the IE's declared data extends past len.\n\nAlso replace i += (pIE-\u003elength + 2) with i += sizeof(*pIE) + pIE-\u003elength\nfor consistency with the sizeof(*pIE) guards added above.",
  "id": "CVE-2026-64443",
  "modified": "2026-07-28T03:56:00.872689434Z",
  "published": "2026-07-25T08:51:15.234Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5e8db4cff5b45c7c4edc8ae3f302027c3bb32b25"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/69f174a0673b6b7a29b851adb60bc450cdc0ecc4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6dd5e8c3011ebabf417257d7f07901a7c4311539"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9193c34f75fd9e1ea8a590d7cced464c3380dc29"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5cc2f999927f69723ca53f1f2a3aa37dbeda907"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bd953d52d587d42365e399b96c52dbdb13032070"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed51de4a86e173c3b0ef78e039c2e49e08b11f16"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64443.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64443"
    },
    {
      "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:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop"
}