CVE-2025-37932

MEDIUM

Linux Kernel - Non-Idempotent htb_qlen_notify() in sch_htb

Title source: llm
STIX 2.1

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.

References (10)

Core 10
Core References

Scores

CVSS v3 5.5
EPSS 0.0009
EPSS Percentile 25.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (28)
debian/debian_linux 11.0
linux/Kernel 4.14.0 - 5.4.294linux
linux/Kernel 5.11.0 - 5.15.190linux
linux/Kernel 5.16.0 - 6.1.138linux
linux/Kernel 5.5.0 - 5.10.241linux
linux/Kernel 6.13.0 - 6.14.6linux
linux/Kernel 6.2.0 - 6.6.90linux
linux/Kernel 6.7.0 - 6.12.28linux
Linux/Linux < 4.14
Linux/Linux 4.14
... and 18 more
Published May 20, 2025
Tracked Since Feb 18, 2026