CVE-2025-37932

sch_htb: make htb_qlen_notify() idempotent

Description

In the Linux kernel, the following vulnerability has been resolved: sch_htb: make htb_qlen_notify() idempotent htb_qlen_notify() 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 fq_codel_dequeue(). Let's make it idempotent to ease qdisc_tree_reduce_backlog() callers' life.

N/A

CVSS

Severity:

EPSS 0.06%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/e6b45f4de763b00dc1c55e685e2dd1aaf525d3c1
https://git.kernel.org/stable/c/73cf6af13153d62f9b76eff422eea79dbc70f15e
https://git.kernel.org/stable/c/bbbf5e0f87078b715e7a665d662a2c0e77f044ae
https://git.kernel.org/stable/c/0a188c0e197383683fd093ab1ea6ce9a5869a6ea
https://git.kernel.org/stable/c/a61f1b5921761fbaf166231418bc1db301e5bf59
https://git.kernel.org/stable/c/5ba8b837b522d7051ef81bacf3d95383ff8edce5

Frequently Asked Questions

What is the severity of CVE-2025-37932?: CVE-2025-37932 has not yet been assigned a CVSS score.
How to fix CVE-2025-37932?: To fix CVE-2025-37932, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-37932 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-37932 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-37932?: CVE-2025-37932 affects Linux Linux, Linux Linux.

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