{"id":"CVE-2026-52928","summary":"af_unix: Reject SIOCATMARK on non-stream sockets","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.","modified":"2026-07-10T03:54:21.043620821Z","published":"2026-06-24T07:14:21.367Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52928.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"314001f0bf927015e459c9d387d62a231fe93af3"},{"fixed":"ec123873fdc83e7244c8ed6d17b8f8ea6c416a67"},{"fixed":"f085971de6d6b8ef946a5e0bcd73ff24509a0f85"},{"fixed":"b741c9c6ef59f17c1f104ddf1217ef77f79ed29b"},{"fixed":"645b1ed3259af38b7814242a420bc2081bdd1eb6"},{"fixed":"c34c41446acf6c0d13b5b06c809be11e0f7f2729"},{"fixed":"3147ddf5a41c20c45c2eb69e00b62f10f822056a"},{"fixed":"d119775f2bad827edc28071c061fdd4a91f889a5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52928.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","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"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52928.json"}}],"schema_version":"1.7.5"}