{"api_version":"1","generated_at":"2026-06-24T18:25:41+00:00","cve":"CVE-2026-52928","urls":{"html":"https://cve.report/CVE-2026-52928","api":"https://cve.report/api/cve/CVE-2026-52928.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-52928","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-52928"},"summary":{"title":"af_unix: Reject SIOCATMARK on non-stream sockets","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 08:16:22","updated_at":"2026-06-24 08:16:22"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/3147ddf5a41c20c45c2eb69e00b62f10f822056a","name":"https://git.kernel.org/stable/c/3147ddf5a41c20c45c2eb69e00b62f10f822056a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/645b1ed3259af38b7814242a420bc2081bdd1eb6","name":"https://git.kernel.org/stable/c/645b1ed3259af38b7814242a420bc2081bdd1eb6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c34c41446acf6c0d13b5b06c809be11e0f7f2729","name":"https://git.kernel.org/stable/c/c34c41446acf6c0d13b5b06c809be11e0f7f2729","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d119775f2bad827edc28071c061fdd4a91f889a5","name":"https://git.kernel.org/stable/c/d119775f2bad827edc28071c061fdd4a91f889a5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-52928","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52928","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 314001f0bf927015e459c9d387d62a231fe93af3 645b1ed3259af38b7814242a420bc2081bdd1eb6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 314001f0bf927015e459c9d387d62a231fe93af3 c34c41446acf6c0d13b5b06c809be11e0f7f2729 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 314001f0bf927015e459c9d387d62a231fe93af3 3147ddf5a41c20c45c2eb69e00b62f10f822056a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 314001f0bf927015e459c9d387d62a231fe93af3 d119775f2bad827edc28071c061fdd4a91f889a5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.88 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.30 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.7 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/unix/af_unix.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"645b1ed3259af38b7814242a420bc2081bdd1eb6","status":"affected","version":"314001f0bf927015e459c9d387d62a231fe93af3","versionType":"git"},{"lessThan":"c34c41446acf6c0d13b5b06c809be11e0f7f2729","status":"affected","version":"314001f0bf927015e459c9d387d62a231fe93af3","versionType":"git"},{"lessThan":"3147ddf5a41c20c45c2eb69e00b62f10f822056a","status":"affected","version":"314001f0bf927015e459c9d387d62a231fe93af3","versionType":"git"},{"lessThan":"d119775f2bad827edc28071c061fdd4a91f889a5","status":"affected","version":"314001f0bf927015e459c9d387d62a231fe93af3","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/unix/af_unix.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.88","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.30","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.88","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.30","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.7","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"5.15","vulnerable":true}],"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":"2026-06-24T07:14:21.367Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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":"2026-06-24T07:14:21.367Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 08:16:22","lastModifiedDate":"2026-06-24 08:16:22","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"52928","Ordinal":"1","Title":"af_unix: Reject SIOCATMARK on non-stream sockets","CVE":"CVE-2026-52928","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"52928","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"af_unix: Reject SIOCATMARK on non-stream sockets"}]}}}