CVE-2026-31574: Linux kernel · clockevents: Add missing resets of the next_event_forced flag
Affects Linux kernelSource CVE Database V5
Not known to be exploited : upgrade to 9401b593fa48218d2667df1610b0ebc518554880 or 4096fd0e8eaea13ebe5206700b33f49635ae18e5 when convenient.
Data as of 5 Nov 2026, 22:05 UTC
Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-05.
- Patch
- Available – fixed in 9401b593fa48218d2667df1610b0ebc518554880, 4096fd0e8eaea13ebe5206700b33f49635ae18e5
Exploitation evidence
Disclosed: evidence found.
CVE published 24 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 5 Nov 2026.
What to do
Upgrade Linux kernel to 9401b593fa48218d2667df1610b0ebc518554880 or 4096fd0e8eaea13ebe5206700b33f49635ae18e5.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
The issue has been fixed in the Linux kernel by adding the missing resets of the next_event_forced flag. Users and administrators should apply the patches corresponding to the fixed commits or upgrade to a kernel version that includes these fixes to resolve the problem.
Description
A vulnerability in the Linux kernel's clockevents subsystem involved missing resets of the next_event_forced flag, causing timer interrupt stalls. This flaw could lead to missed timer interrupts and system stalls during clock event state changes, non-forced event arming, and suspend wakeup handling. The issue has been fixed by adding the missing resets to the flag.