{"id":"CVE-2026-98394","revision":"df74208596174337804aef5ec79c753b","records":[{"revision":"df74208596174337804aef5ec79c753b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98394","aliases":[],"title":"af_unix: Return immediately when manage_oob() returns NULL for 0-length buffer.","description":"In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Return immediately when manage_oob() returns NULL for 0-length buffer.\n\nFahad Alharbi reported that recv(0, MSG_PEEK) triggers busy-wait\nin unix_stream_read_generic() if recv() is blocking and the last\nskb in the queue is MSG_OOB skb.\n\nIn such a situation, TCP returns 0 immediately regardless of\nblocking or non-blocking.\n\nLet's follow the behaviour.","state":0,"publishedAt":"2026-10-14T13:25:57.287+00:00","modifiedAt":"2026-10-19T09:18:47.827+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/unix/af_unix.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"314001f0bf927015e459c9d387d62a231fe93af3\",\n                            \"lessThan\": \"3d3c7a3df66b2ca3d2cd1a2a0c37eb701feba713\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"314001f0bf927015e459c9d387d62a231fe93af3\",\n                            \"lessThan\": \"d5dd55b316ca229a4cbf11729483ba5bb57233e7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"314001f0bf927015e459c9d387d62a231fe93af3\",\n                            \"lessThan\": \"c81c5be3826c8467945b964d0cf7f7b3d65461db\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"314001f0bf927015e459c9d387d62a231fe93af3\",\n                            \"lessThan\": \"6e5ee08eb5858d175da6768d75d163817b6a9d4a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/unix/af_unix.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.15\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.15\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/3d3c7a3df66b2ca3d2cd1a2a0c37eb701feba713","https://git.kernel.org/stable/c/d5dd55b316ca229a4cbf11729483ba5bb57233e7","https://git.kernel.org/stable/c/c81c5be3826c8467945b964d0cf7f7b3d65461db","https://git.kernel.org/stable/c/6e5ee08eb5858d175da6768d75d163817b6a9d4a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98394","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98394","identifiers":["CVE-2026-98394"]},"retained":false,"historicalAffected":[]}],"coverage":[]}