CVE-2026-93146

Unknown

Description

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.

SeverityUnknown

CVSS—

Exploit probability—

Product

Linux

PublishedSep 17, 2026

First seenSep 17, 2026

How to fix

Update

Linux Linuxce0dd307dfa3193fbf06371b7c819a6bff7d3d68, 5b8a40de738b7c4896c2edbc6262bd1b3462ded0, b20d7085ab314672447322c10cc5d1ba443e3b8e, db667d2970c756cc7b483f45f272440f845a665b, 1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce, 06aba58e58492d2b8eae059274caed29025ea96e or later

Affected products

Product	Affected versions	Fixed in
Linux Linux	04a8682a71becdb639ec9c0d82b315a2baef7a5d ≤ v < ce0dd307dfa3193fbf06371b7c819a6bff7d3d68, 04a8682a71becdb639ec9c0d82b315a2baef7a5d ≤ v < 5b8a40de738b7c4896c2edbc6262bd1b3462ded0, 04a8682a71becdb639ec9c0d82b315a2baef7a5d ≤ v < b20d7085ab314672447322c10cc5d1ba443e3b8e, 04a8682a71becdb639ec9c0d82b315a2baef7a5d ≤ v < db667d2970c756cc7b483f45f272440f845a665b, 04a8682a71becdb639ec9c0d82b315a2baef7a5d ≤ v < 1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce, 04a8682a71becdb639ec9c0d82b315a2baef7a5d ≤ v < 06aba58e58492d2b8eae059274caed29025ea96e, 5.6	ce0dd307dfa3193fbf06371b7c819a6bff7d3d68, 5b8a40de738b7c4896c2edbc6262bd1b3462ded0, b20d7085ab314672447322c10cc5d1ba443e3b8e, db667d2970c756cc7b483f45f272440f845a665b, 1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce, 06aba58e58492d2b8eae059274caed29025ea96e

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