{"id":"CVE-2026-93146","summary":"time/namespace: Validate nanosecond field in proc_timens_set_offset()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntime/namespace: Validate nanosecond field in proc_timens_set_offset()\n\nThe function validates tv_sec to be within [-KTIME_SEC_MAX, KTIME_SEC_MAX]\nbut never validates that tv_nsec is within the valid range of\n[0, NSEC_PER_SEC-1] before using it in timespec64_add().\n\ntimespec64_add() expects both timespec64 structures to have normalized\nvalues with tv_nsec in the range [0, 999999999]. If off-\u003eval.tv_nsec\ncontains invalid values (negative or \u003e= NSEC_PER_SEC), it could lead to\nincorrect calculations or unexpected behavior.\n\nAdd validation to ensure tv_nsec is within the valid range before\nperforming the addition.","modified":"2026-09-19T03:47:31.595489603Z","published":"2026-09-17T16:11:44.117Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93146.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/06aba58e58492d2b8eae059274caed29025ea96e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce"},{"type":"WEB","url":"https://git.kernel.org/stable/c/db667d2970c756cc7b483f45f272440f845a665b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93146.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93146"},{"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":"04a8682a71becdb639ec9c0d82b315a2baef7a5d"},{"fixed":"db667d2970c756cc7b483f45f272440f845a665b"},{"fixed":"1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce"},{"fixed":"06aba58e58492d2b8eae059274caed29025ea96e"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93146.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.6.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93146.json"}}],"schema_version":"1.9.0"}