CVE-2026-52928 (GCVE-0-2026-52928)
Vulnerability from cvelistv5
Published
2026-06-24 07:14
Modified
2026-07-04 11:50
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: af_unix: Reject SIOCATMARK on non-stream sockets SIOCATMARK reports whether the receive queue is at the urgent mark for MSG_OOB. In AF_UNIX, MSG_OOB is supported only for SOCK_STREAM sockets. SOCK_DGRAM and SOCK_SEQPACKET reject MSG_OOB in sendmsg() and recvmsg(), so they should not support SIOCATMARK either. Return -EOPNOTSUPP for non-stream sockets before checking the receive queue.
References
Impacted products
Vendor Product Version
Linux Linux Version: 314001f0bf927015e459c9d387d62a231fe93af3
Version: 314001f0bf927015e459c9d387d62a231fe93af3
Version: 314001f0bf927015e459c9d387d62a231fe93af3
Version: 314001f0bf927015e459c9d387d62a231fe93af3
Version: 314001f0bf927015e459c9d387d62a231fe93af3
Version: 314001f0bf927015e459c9d387d62a231fe93af3
Version: 314001f0bf927015e459c9d387d62a231fe93af3
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{
  "containers": {
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/unix/af_unix.c"
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          ]
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          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "5.15.211",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.177",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.144",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.88",
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            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
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            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
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            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.211",
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                  "vulnerable": true
                },
                {
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-04T11:50:47.159Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ec123873fdc83e7244c8ed6d17b8f8ea6c416a67"
        },
        {
          "url": "https://git.kernel.org/stable/c/f085971de6d6b8ef946a5e0bcd73ff24509a0f85"
        },
        {
          "url": "https://git.kernel.org/stable/c/b741c9c6ef59f17c1f104ddf1217ef77f79ed29b"
        },
        {
          "url": "https://git.kernel.org/stable/c/645b1ed3259af38b7814242a420bc2081bdd1eb6"
        },
        {
          "url": "https://git.kernel.org/stable/c/c34c41446acf6c0d13b5b06c809be11e0f7f2729"
        },
        {
          "url": "https://git.kernel.org/stable/c/3147ddf5a41c20c45c2eb69e00b62f10f822056a"
        },
        {
          "url": "https://git.kernel.org/stable/c/d119775f2bad827edc28071c061fdd4a91f889a5"
        }
      ],
      "title": "af_unix: Reject SIOCATMARK on non-stream sockets",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-52928",
    "datePublished": "2026-06-24T07:14:21.367Z",
    "dateReserved": "2026-06-09T07:44:35.368Z",
    "dateUpdated": "2026-07-04T11:50:47.159Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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