CVE-2025-37932: sch_htb: make htb_qlen_notify() idempotent
In the Linux kernel, the following vulnerability has been resolved:
schhtb: make htbqlennotify() idempotent
htbqlennotify() always deactivates the HTB class and in fact could trigger a warning if it is already deactivated. Therefore, it is not idempotent and not friendly to its callers, like fqcodeldequeue().
Let's make it idempotent to ease qdisctreereducebacklog() callers' life.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2025-37932?
CVE-2025-37932 is classified with a medium severity level due to its potential impact on system performance.
How do I fix CVE-2025-37932?
To fix CVE-2025-37932, you should update your Linux kernel to the latest version where this vulnerability has been patched.
What components are affected by CVE-2025-37932?
CVE-2025-37932 affects the sch_htb module in the Linux Kernel.
Is my system vulnerable to CVE-2025-37932?
If you are running an affected version of the Linux Kernel that has not been updated, your system may be vulnerable to CVE-2025-37932.
What exploit techniques are associated with CVE-2025-37932?
CVE-2025-37932 may be exploited through denial of service attacks that target the htb_qlen_notify() function.