{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b24df3e30cbf48255db866720fb71f14bf9d2f39"
            },
            {
              "fixed": "8703539d22fdbc13dd2db090ee199c3a427b8ea0"
            },
            {
              "fixed": "e78fc1d240b27349b45a0f1c3e3c2c401d7e230d"
            },
            {
              "fixed": "a46eb242e9eef3a3897d166748b23303c516e870"
            },
            {
              "fixed": "ebb8a075fdc7af3d196a4f158a0e18dbc394c0e3"
            },
            {
              "fixed": "282b72f9a7ef31296c48366db4128882999cc048"
            },
            {
              "fixed": "f73726b83e4756fdaa099e1bc1143293bd57ad79"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.19.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.54"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98167.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix server-\u003etotal_read for compound encrypted PDUs\n\nIn receive_encrypted_standard(), server-\u003etotal_read is left at the\nfull decrypted frame size when walking sub-PDUs of a compound encrypted\nframe. As a result, cifs_handle_standard() passes this full size\nto smb2_check_message(), causing the PDU length guards to incorrectly\nvalidate the entire compound frame instead of the current sub-PDU.\n\nThis allows truncated non-last sub-PDUs to bypass length validation,\nleading to out-of-bounds reads in smb2_get_data_area_len().\n\nFix this by setting server-\u003etotal_read to the true length of the\ncurrent sub-PDU: next_cmd for non-last sub-PDUs, and the remaining\npdu_length for the last one.",
  "id": "CVE-2026-98167",
  "modified": "2026-10-08T02:30:40.077589908Z",
  "published": "2026-10-06T08:44:12.731Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/282b72f9a7ef31296c48366db4128882999cc048"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8703539d22fdbc13dd2db090ee199c3a427b8ea0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a46eb242e9eef3a3897d166748b23303c516e870"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e78fc1d240b27349b45a0f1c3e3c2c401d7e230d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ebb8a075fdc7af3d196a4f158a0e18dbc394c0e3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f73726b83e4756fdaa099e1bc1143293bd57ad79"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98167.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98167"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "smb: client: fix server-\u003etotal_read for compound encrypted PDUs"
}