CVE-2025-68756: block: Use RCU in blk_mq_[un]quiesce_tagset() instead of set->tag_list_lock
Published Jan 5, 2026
·Updated
block: Use RCU in blkmq[un]quiescetagset() instead of set->taglistlock
Affected Software
3 affected componentsFixes available
Event History
Jan 5, 2026
CVE Published
via MITRE·09:32 AM
Data Sourced
via MITRE·09:32 AM
Description
Data Sourced
via NVD·10:15 AM
Description
Jan 6, 2026
Data Sourced
via Microsoft·01:02 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·09:02 AM
DescriptionSeverity
Updated
via Microsoft·09:02 AM
Affected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-68756?
The severity of CVE-2025-68756 is considered high due to its impact on the stability and performance of the Linux kernel.
2
How do I fix CVE-2025-68756?
To fix CVE-2025-68756, update your Linux kernel to the latest stable version that includes the security patch addressing this vulnerability.
3
What systems are affected by CVE-2025-68756?
CVE-2025-68756 affects systems running vulnerable versions of the Linux kernel.
4
What does CVE-2025-68756 involve?
CVE-2025-68756 involves a vulnerability in the Linux kernel's block subsystem related to improper handling of tagsets.
5
Is there a workaround for CVE-2025-68756?
There is no recommended workaround for CVE-2025-68756 other than applying the appropriate kernel updates.