{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "314001f0bf927015e459c9d387d62a231fe93af3"
            },
            {
              "fixed": "ec123873fdc83e7244c8ed6d17b8f8ea6c416a67"
            },
            {
              "fixed": "f085971de6d6b8ef946a5e0bcd73ff24509a0f85"
            },
            {
              "fixed": "b741c9c6ef59f17c1f104ddf1217ef77f79ed29b"
            },
            {
              "fixed": "645b1ed3259af38b7814242a420bc2081bdd1eb6"
            },
            {
              "fixed": "c34c41446acf6c0d13b5b06c809be11e0f7f2729"
            },
            {
              "fixed": "3147ddf5a41c20c45c2eb69e00b62f10f822056a"
            },
            {
              "fixed": "d119775f2bad827edc28071c061fdd4a91f889a5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.15.0"
            },
            {
              "fixed": "5.15.211"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.177"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.144"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.88"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.30"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52928.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Reject SIOCATMARK on non-stream sockets\n\nSIOCATMARK reports whether the receive queue is at the urgent mark for\nMSG_OOB.\n\nIn AF_UNIX, MSG_OOB is supported only for SOCK_STREAM sockets.\nSOCK_DGRAM and SOCK_SEQPACKET reject MSG_OOB in sendmsg() and recvmsg(),\nso they should not support SIOCATMARK either.\n\nReturn -EOPNOTSUPP for non-stream sockets before checking the receive\nqueue.",
  "id": "CVE-2026-52928",
  "modified": "2026-07-10T03:54:21.043620821Z",
  "published": "2026-06-24T07:14:21.367Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3147ddf5a41c20c45c2eb69e00b62f10f822056a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/645b1ed3259af38b7814242a420bc2081bdd1eb6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b741c9c6ef59f17c1f104ddf1217ef77f79ed29b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c34c41446acf6c0d13b5b06c809be11e0f7f2729"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d119775f2bad827edc28071c061fdd4a91f889a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec123873fdc83e7244c8ed6d17b8f8ea6c416a67"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f085971de6d6b8ef946a5e0bcd73ff24509a0f85"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52928.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52928"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "af_unix: Reject SIOCATMARK on non-stream sockets"
}