VulnerabilityPublished 17 Sep 2026Updated 21 Oct 2026

CVE-2026-93146: Linux kernel · time/namespace: Validate nanosecond field in proc_timens_set_offset()

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in db667d2970c756cc7b483f45f272440f845a665b : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in db667d2970c756cc7b483f45f272440f845a665b, b20d7085ab314672447322c10cc5d1ba443e3b8e, 06aba58e58492d2b8eae059274caed29025ea96e +2

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 04a8682a71becdb639ec9c0d82b315a2baef7a5d, < db667d2970c756cc7b483f45f272440f845a665b	Fixed in db667d2970c756cc7b483f45f272440f845a665b
LinuxLinux	Affected ≥ 04a8682a71becdb639ec9c0d82b315a2baef7a5d, < b20d7085ab314672447322c10cc5d1ba443e3b8e	Fixed in b20d7085ab314672447322c10cc5d1ba443e3b8e
LinuxLinux	Affected ≥ 04a8682a71becdb639ec9c0d82b315a2baef7a5d, < 06aba58e58492d2b8eae059274caed29025ea96e	Fixed in 06aba58e58492d2b8eae059274caed29025ea96e
LinuxLinux	Affected ≥ 04a8682a71becdb639ec9c0d82b315a2baef7a5d, < 5b8a40de738b7c4896c2edbc6262bd1b3462ded0	Fixed in 5b8a40de738b7c4896c2edbc6262bd1b3462ded0
LinuxLinux	Affected ≥ 04a8682a71becdb639ec9c0d82b315a2baef7a5d, < 1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce	Fixed in 1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce
LinuxLinux	Affected =5.6	Fixed in–

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.

References

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