CVE-2026-93146time/namespace: Validate nanosecond field in proc_timens_set_offset()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: time/namespace: Validate nanosecond field in proc_timens_set_offset() The function validates tv_sec to be within [-KTIME_SEC_MAX, KTIME_SEC_MAX] but never validates that tv_nsec is within the valid range of [0, NSEC_PER_SEC-1] before using it in timespec64_add(). timespec64_add() expects both timespec64 structures to have normalized values with tv_nsec in the range [0, 999999999]. If off->val.tv_nsec contains invalid values (negative or >= NSEC_PER_SEC), it could lead to incorrect calculations or unexpected behavior. Add validation to ensure tv_nsec is within the valid range before performing the addition.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 04a8682a71becdb639ec9c0d82b315a2baef7a5d before db667d2970c756cc7b483f45f272440f845a665b; 04a8682a71becdb639ec9c0d82b315a2baef7a5d builds before 1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce; from 04a8682a71becdb639ec9c0d82b315a2baef7a5d before 06aba58e58492d2b8eae059274caed29025ea96e | CNA record |
References
- https://git.kernel.org/stable/c/db667d2970c756cc7b483f45f272440f845a665b
- https://git.kernel.org/stable/c/1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce
- https://git.kernel.org/stable/c/06aba58e58492d2b8eae059274caed29025ea96e
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.