CVE-2026-52977: futex: Prevent lockup in requeue-PI during signal/ timeout wakeup
Published Jun 24, 2026
·Updated
futex: Prevent lockup in requeue-PI during signal/ timeout wakeup
Affected Software
8 affected componentsFixes available
Linux Linux kernel
Microsoft azl3 kernel 6.6.139.1-1<6.6.143.1-1
6.6.143.1-1
Linux Linux kernel>=5.15<6.1.175
Linux Linux kernel>=6.2<6.6.141
Linux Linux kernel>=6.7<6.12.91
Linux Linux kernel>=6.13<6.18.33
Linux Linux kernel>=6.19<7.0.10
Linux Linux kernel=7.1-rc1
Remediation
Event History
Jun 24, 2026
CVE Published
via MITRE·04:28 PM
Data Sourced
via MITRE·04:28 PM
Description
Data Sourced
via NVD·05:17 PM
RemedyDescriptionSeverityAffected Software
Jun 27, 2026
Data Sourced
via Microsoft·08:14 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·08:14 AM
Affected Software
Updated
via Microsoft·08:14 AM
DescriptionSeverity
Frequently Asked Questions
1
What is the severity of CVE-2026-52977?
The severity of CVE-2026-52977 is rated at 28, indicating a significant risk to affected systems.
2
What does CVE-2026-52977 involve?
CVE-2026-52977 involves a race condition in the Linux kernel related to futex handling that can cause lockup during signal or timeout wakeup.
3
How do I fix CVE-2026-52977?
To fix CVE-2026-52977, update your Linux kernel to a version that includes the patch addressing this vulnerability.
4
What systems are affected by CVE-2026-52977?
CVE-2026-52977 affects systems running vulnerable versions of the Linux kernel that utilize futex mechanisms.
5
When was CVE-2026-52977 published?
CVE-2026-52977 was published on June 24, 2026.