{"api_version":"1","generated_at":"2026-06-27T18:33:38+00:00","cve":"CVE-2026-49413","urls":{"html":"https://cve.report/CVE-2026-49413","api":"https://cve.report/api/cve/CVE-2026-49413.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-49413","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-49413"},"summary":{"title":"Flaw in Linuxulator execution of setugid binaries","description":"The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the P_SUGID process flag.  During execve(2), this flag is not yet set at the point where the auxiliary vector is constructed, so AT_SECURE was incorrectly set to zero for set-user-ID and set-group-ID executables.\n\nAn unprivileged local user can inject a shared library via LD_PRELOAD into a set-user-ID or set-group-ID Linux binary, gaining the privileges of that binary.","state":"PUBLISHED","assigner":"freebsd","published_at":"2026-06-27 09:16:24","updated_at":"2026-06-27 09:16:24"},"problem_types":["CWE-266","CWE-266 CWE-266: Incorrect Privilege Assignment"],"metrics":[],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:30.linux.asc","name":"https://security.freebsd.org/advisories/FreeBSD-SA-26:30.linux.asc","refsource":"secteam@freebsd.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-49413","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49413","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 15.0-RELEASE p10 release","platforms":[]},{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 14.4-RELEASE p6 release","platforms":[]},{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 14.3-RELEASE p15 release","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Minseong Kim of NSHC Red Alert Labs","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unknown","modules":["linux"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"lessThan":"p10","status":"affected","version":"15.0-RELEASE","versionType":"release"},{"lessThan":"p6","status":"affected","version":"14.4-RELEASE","versionType":"release"},{"lessThan":"p15","status":"affected","version":"14.3-RELEASE","versionType":"release"}]}],"credits":[{"lang":"en","type":"finder","value":"Minseong Kim of NSHC Red Alert Labs"}],"datePublic":"2026-06-09T23:30:00.000Z","descriptions":[{"lang":"en","value":"The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the P_SUGID process flag.  During execve(2), this flag is not yet set at the point where the auxiliary vector is constructed, so AT_SECURE was incorrectly set to zero for set-user-ID and set-group-ID executables.\n\nAn unprivileged local user can inject a shared library via LD_PRELOAD into a set-user-ID or set-group-ID Linux binary, gaining the privileges of that binary."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-266","description":"CWE-266: Incorrect Privilege Assignment","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-06-27T09:08:23.756Z","orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","shortName":"freebsd"},"references":[{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:30.linux.asc"}],"title":"Flaw in Linuxulator execution of setugid binaries","x_generator":{"engine":"cvelib 1.8.0"}}},"cveMetadata":{"assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","assignerShortName":"freebsd","cveId":"CVE-2026-49413","datePublished":"2026-06-27T09:08:23.756Z","dateReserved":"2026-05-29T20:24:28.615Z","dateUpdated":"2026-06-27T09:08:23.756Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-27 09:16:24","lastModifiedDate":"2026-06-27 09:16:24","problem_types":["CWE-266","CWE-266 CWE-266: Incorrect Privilege Assignment"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"49413","Ordinal":"1","Title":"Flaw in Linuxulator execution of setugid binaries","CVE":"CVE-2026-49413","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"49413","Ordinal":"1","NoteData":"The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the P_SUGID process flag.  During execve(2), this flag is not yet set at the point where the auxiliary vector is constructed, so AT_SECURE was incorrectly set to zero for set-user-ID and set-group-ID executables.\n\nAn unprivileged local user can inject a shared library via LD_PRELOAD into a set-user-ID or set-group-ID Linux binary, gaining the privileges of that binary.","Type":"Description","Title":"Flaw in Linuxulator execution of setugid binaries"}]}}}