{"id":"CVE-2026-93146","state":"PUBLISHED","title":"time/namespace: Validate nanosecond field in proc_timens_set_offset()","description":"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->val.tv_nsec\ncontains invalid values (negative or >= 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.","publishedAt":"2026-09-17T16:11:44.117Z","updatedAt":"2026-10-30T12:36:07.785Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"ce0dd307dfa3193fbf06371b7c819a6bff7d3d68","versionType":"git"},{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"5b8a40de738b7c4896c2edbc6262bd1b3462ded0","versionType":"git"},{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"b20d7085ab314672447322c10cc5d1ba443e3b8e","versionType":"git"},{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"db667d2970c756cc7b483f45f272440f845a665b","versionType":"git"},{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce","versionType":"git"},{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"06aba58e58492d2b8eae059274caed29025ea96e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/time/namespace.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.6","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/time/namespace.c"]}],"references":["https://git.kernel.org/stable/c/ce0dd307dfa3193fbf06371b7c819a6bff7d3d68","https://git.kernel.org/stable/c/5b8a40de738b7c4896c2edbc6262bd1b3462ded0","https://git.kernel.org/stable/c/b20d7085ab314672447322c10cc5d1ba443e3b8e","https://git.kernel.org/stable/c/db667d2970c756cc7b483f45f272440f845a665b","https://git.kernel.org/stable/c/1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce","https://git.kernel.org/stable/c/06aba58e58492d2b8eae059274caed29025ea96e"],"weaknesses":[],"ingestedAt":"2026-10-30T12:54:04.478Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93146.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93146","state":"PUBLISHED","datePublished":"2026-09-17T16:11:44.117Z","dateUpdated":"2026-10-30T12:36:07.785Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T16:02:15.088Z"},"containers":{"cna":{"title":"time/namespace: Validate nanosecond field in proc_timens_set_offset()","descriptions":[{"lang":"en","value":"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->val.tv_nsec\ncontains invalid values (negative or >= 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"ce0dd307dfa3193fbf06371b7c819a6bff7d3d68","versionType":"git"},{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"5b8a40de738b7c4896c2edbc6262bd1b3462ded0","versionType":"git"},{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"b20d7085ab314672447322c10cc5d1ba443e3b8e","versionType":"git"},{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"db667d2970c756cc7b483f45f272440f845a665b","versionType":"git"},{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce","versionType":"git"},{"version":"04a8682a71becdb639ec9c0d82b315a2baef7a5d","status":"affected","lessThan":"06aba58e58492d2b8eae059274caed29025ea96e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/time/namespace.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.6","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/time/namespace.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/ce0dd307dfa3193fbf06371b7c819a6bff7d3d68"},{"url":"https://git.kernel.org/stable/c/5b8a40de738b7c4896c2edbc6262bd1b3462ded0"},{"url":"https://git.kernel.org/stable/c/b20d7085ab314672447322c10cc5d1ba443e3b8e"},{"url":"https://git.kernel.org/stable/c/db667d2970c756cc7b483f45f272440f845a665b"},{"url":"https://git.kernel.org/stable/c/1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce"},{"url":"https://git.kernel.org/stable/c/06aba58e58492d2b8eae059274caed29025ea96e"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:36:07.785Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}