{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc"
            },
            {
              "fixed": "9ded62c302c0342efdb5eda3bf6e75720caad0df"
            },
            {
              "fixed": "f101271fcf55d7eacfefd610b51ec65f46ba8118"
            },
            {
              "fixed": "4b2738b93edad661178340239de657d876b73d3d"
            },
            {
              "fixed": "927e4bd5692f2a4901808822981fb2c8d4456548"
            },
            {
              "fixed": "016bc663657366d386993f63eb31072eb45a2b77"
            },
            {
              "fixed": "8f2be7285941a33a9f72579a23b96392f83c758e"
            },
            {
              "fixed": "5199c125d25aeae8615c4fc31652cc0fe624338e"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.34"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.140"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.86"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.27"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46024.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()\n\nIf a message of type CEPH_MSG_AUTH_REPLY contains a zero value for both\nprotocol and result, this is currently not treated as an error. In case\nof ac-\u003enegotiating == true and ac-\u003eprotocol \u003e 0, this leads to setting\nac-\u003eprotocol = 0 and ac-\u003eops = NULL. Thereafter, the check for\nac-\u003eprotocol != protocol returns false, and init_protocol() is not\ncalled. Subsequently, ac-\u003eops-\u003ehandle_reply() is called, which leads to\na null pointer dereference, because ac-\u003eops is still NULL.\n\nThis patch changes the check for ac-\u003eprotocol != protocol to\n!ac-\u003eprotocol, as this also includes the case when the protocol was set\nto zero in the message. This causes the message to be treated as\ncontaining a bad auth protocol.",
  "id": "CVE-2026-46024",
  "modified": "2026-07-15T01:48:58.345711569Z",
  "published": "2026-05-27T12:56:29.932Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/016bc663657366d386993f63eb31072eb45a2b77"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b2738b93edad661178340239de657d876b73d3d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5199c125d25aeae8615c4fc31652cc0fe624338e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f2be7285941a33a9f72579a23b96392f83c758e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/927e4bd5692f2a4901808822981fb2c8d4456548"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ded62c302c0342efdb5eda3bf6e75720caad0df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f101271fcf55d7eacfefd610b51ec65f46ba8118"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46024.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46024"
    },
    {
      "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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()"
}