CVE-2025-39819: fs/smb: Fix inconsistent refcnt update
Published Sep 16, 2025
·Updated
fs/smb: Fix inconsistent refcnt update
Affected Software
10 affected componentsFixes available
Linux Linux kernel=
Microsoft azl3 kernel 6.6.96.2-2
Linux Linux kernel>=5.8<6.1.150
Linux Linux kernel>=6.2<6.6.104
Linux Linux kernel>=6.7<6.12.45
Linux Linux kernel>=6.13<6.16.5
Linux Linux kernel=6.17-rc1
Linux Linux kernel=6.17-rc2
Linux Linux kernel=6.17-rc3
Debian Debian Linux=11.0
Event History
Sep 16, 2025
CVE Published
via MITRE·01:00 PM
Data Sourced
via MITRE·01:00 PM
Description
Data Sourced
via NVD·01:15 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Red Hat·02:03 PM
DescriptionSeverityAffected Software
Sep 20, 2025
Data Sourced
via Microsoft·01:07 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·08:07 AM
DescriptionSeverity
Frequently Asked Questions
1
What is the severity of CVE-2025-39819?
CVE-2025-39819 has been classified with a severity rating of medium due to the potential for resource leaks.
2
How do I fix CVE-2025-39819?
To fix CVE-2025-39819, update the Linux kernel to the latest version that includes the patch for the inconsistent refcount update.
3
What systems are affected by CVE-2025-39819?
CVE-2025-39819 affects all versions of the Linux kernel prior to the application of the patch that resolves the issue.
4
What are the potential impacts of CVE-2025-39819?
The potential impact of CVE-2025-39819 may include resource leaks that could affect system performance or stability.
5
When was CVE-2025-39819 disclosed?
CVE-2025-39819 was disclosed on the date that the patch became available with the Linux kernel updates.