{"api_version":"1","generated_at":"2026-08-19T11:44:42+00:00","cve":"CVE-2026-49426","urls":{"html":"https://cve.report/CVE-2026-49426","api":"https://cve.report/api/cve/CVE-2026-49426.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-49426","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-49426"},"summary":{"title":"Incorrect audit records for ptrace(2) syscall requests","description":"When auditing a system call executed via ptrace(PT_SC_REMOTE), the kernel passed the return value of an internal setup function to AUDIT_SYSCALL_EXIT() rather than the actual result of the executed system call.  As a result, committed audit records for system calls which returned an error do not reflect the true outcome of the operation.  That is, they indicate that the operation succeeded when it in fact failed.\n\nAudit records for system calls executed via ptrace(PT_SC_REMOTE) may show an incorrect error status.  An attacker with the ability to debug a process could use this to produce misleading audit trails, potentially undermining audit-based Intrusion Detection Systems (IDS).","state":"PUBLISHED","assigner":"freebsd","published_at":"2026-08-19 06:17:41","updated_at":"2026-08-19 06:17:41"},"problem_types":["CWE-223","CWE-224","CWE-223 CWE-223: Omission of Security-relevant Information","CWE-224 CWE-224: Obscured Security-relevant Information by Alternate Name"],"metrics":[],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:45.audit.asc","name":"https://security.freebsd.org/advisories/FreeBSD-SA-26:45.audit.asc","refsource":"secteam@freebsd.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-49426","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49426","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 15.1-RELEASE p1 release","platforms":[]},{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 15.0-RELEASE p11 release","platforms":[]},{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 14.4-RELEASE p7 release","platforms":[]},{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 14.3-RELEASE p16 release","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Kyle Evans","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unknown","modules":["audit"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"lessThan":"p1","status":"affected","version":"15.1-RELEASE","versionType":"release"},{"lessThan":"p11","status":"affected","version":"15.0-RELEASE","versionType":"release"},{"lessThan":"p7","status":"affected","version":"14.4-RELEASE","versionType":"release"},{"lessThan":"p16","status":"affected","version":"14.3-RELEASE","versionType":"release"}]}],"credits":[{"lang":"en","type":"finder","value":"Kyle Evans"}],"datePublic":"2026-06-30T20:00:00.000Z","descriptions":[{"lang":"en","value":"When auditing a system call executed via ptrace(PT_SC_REMOTE), the kernel passed the return value of an internal setup function to AUDIT_SYSCALL_EXIT() rather than the actual result of the executed system call.  As a result, committed audit records for system calls which returned an error do not reflect the true outcome of the operation.  That is, they indicate that the operation succeeded when it in fact failed.\n\nAudit records for system calls executed via ptrace(PT_SC_REMOTE) may show an incorrect error status.  An attacker with the ability to debug a process could use this to produce misleading audit trails, potentially undermining audit-based Intrusion Detection Systems (IDS)."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-223","description":"CWE-223: Omission of Security-relevant Information","lang":"en","type":"CWE"},{"cweId":"CWE-224","description":"CWE-224: Obscured Security-relevant Information by Alternate Name","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-19T06:04:36.581Z","orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","shortName":"freebsd"},"references":[{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:45.audit.asc"}],"title":"Incorrect audit records for ptrace(2) syscall requests","x_generator":{"engine":"cvelib 1.8.0"}}},"cveMetadata":{"assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","assignerShortName":"freebsd","cveId":"CVE-2026-49426","datePublished":"2026-08-19T06:04:36.581Z","dateReserved":"2026-05-29T20:24:28.616Z","dateUpdated":"2026-08-19T06:04:36.581Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-19 06:17:41","lastModifiedDate":"2026-08-19 06:17:41","problem_types":["CWE-223","CWE-224","CWE-223 CWE-223: Omission of Security-relevant Information","CWE-224 CWE-224: Obscured Security-relevant Information by Alternate Name"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"49426","Ordinal":"1","Title":"Incorrect audit records for ptrace(2) syscall requests","CVE":"CVE-2026-49426","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"49426","Ordinal":"1","NoteData":"When auditing a system call executed via ptrace(PT_SC_REMOTE), the kernel passed the return value of an internal setup function to AUDIT_SYSCALL_EXIT() rather than the actual result of the executed system call.  As a result, committed audit records for system calls which returned an error do not reflect the true outcome of the operation.  That is, they indicate that the operation succeeded when it in fact failed.\n\nAudit records for system calls executed via ptrace(PT_SC_REMOTE) may show an incorrect error status.  An attacker with the ability to debug a process could use this to produce misleading audit trails, potentially undermining audit-based Intrusion Detection Systems (IDS).","Type":"Description","Title":"Incorrect audit records for ptrace(2) syscall requests"}]}}}