5.5

CVE-2026-31574: clockevents: Add missing resets of the next_event_forced flag

Analyzed
AliasesUBUNTU-CVE-2026-31574DEBIAN-CVE-2026-31574CGA-2j7x-4jf4-8v7h
Published 24-04-2026Last modified 14-06-2026

Vulnerability summary

CVE-2026-31574 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.11% chance of exploitation in the next 30 days, higher than 1.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.11%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 7
OPENSUSE-SU-2026:10703-1USN-8488-1USN-8488-2USN-8507-1USN-8569-1USN-8603-1

Timeline

  1. 24-04-2026
    PublishedVulnerability first disclosed.
  2. 14-06-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: clockevents: Add missing resets of the next_event_forced flag The prevention mechanism against timer interrupt starvation missed to reset the next_event_forced flag in a couple of places: - When the clock event state changes. That can cause the flag to be stale over a shutdown/startup sequence - When a non-forced event is armed, which then prevents rearming before that event. If that event is far out in the future this will cause missed timer interrupts. - In the suspend wakeup handler. That led to stalls which have been reported by several people. Add the missing resets, which fixes the problems for the reporters.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.11%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

Decrease -0.04 pp

From 0.14% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu98 products
  • linux< 7.0.0-27.27
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 7.0.0-1008.8
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard8 products
  • linux-aws-6.18< 6.18.24-r0
  • linux-azure-6.18< 6.18.24-r0
  • linux-gcp-6.18< 6.18.24-r0
  • linux-qemu-6.18< 6.18.24-r2
  • linux-qemu-6.18-bootc-boot-installed< 6.18.24-r2
Linux2 products
  • linux≥ d6e152d905bdb1f32f9d99775e2f453350399a6a, < 9401b593fa48218d2667df1610b0ebc518554880 | ≥ d6e152d905bdb1f32f9d99775e2f453350399a6a, < 4096fd0e8eaea13ebe5206700b33f49635ae18e5 | 7.0
  • linux_kernelEOL7.0
Debian1 product
  • linuxAll versions (No fix recorded)

4 vendors · 109 products

References

12 links
Show all 12 references