CVE-2025-37932

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

https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html

https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html

https://git.kernel.org/stable/c/e6b45f4de763b00dc1c55e685e2dd1aaf525d3c1

https://git.kernel.org/stable/c/bbbf5e0f87078b715e7a665d662a2c0e77f044ae

https://git.kernel.org/stable/c/a61f1b5921761fbaf166231418bc1db301e5bf59

https://git.kernel.org/stable/c/967955c9e57f8eebfccc298037d4aaf3d42bc1c9

https://git.kernel.org/stable/c/73cf6af13153d62f9b76eff422eea79dbc70f15e

https://git.kernel.org/stable/c/5ba8b837b522d7051ef81bacf3d95383ff8edce5

https://git.kernel.org/stable/c/32ae12ce6a9f6bace186ca7335220ff59b6cc3cd

https://git.kernel.org/stable/c/0a188c0e197383683fd093ab1ea6ce9a5869a6ea

Details

Source: Mitre, NVD

EPSS