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.
Product status
959466588aa7f84ccf79ae36a1d89542eaf9aaec (git) before e6b45f4de763b00dc1c55e685e2dd1aaf525d3c1
959466588aa7f84ccf79ae36a1d89542eaf9aaec (git) before 32ae12ce6a9f6bace186ca7335220ff59b6cc3cd
959466588aa7f84ccf79ae36a1d89542eaf9aaec (git) before 967955c9e57f8eebfccc298037d4aaf3d42bc1c9
959466588aa7f84ccf79ae36a1d89542eaf9aaec (git) before 73cf6af13153d62f9b76eff422eea79dbc70f15e
959466588aa7f84ccf79ae36a1d89542eaf9aaec (git) before bbbf5e0f87078b715e7a665d662a2c0e77f044ae
959466588aa7f84ccf79ae36a1d89542eaf9aaec (git) before 0a188c0e197383683fd093ab1ea6ce9a5869a6ea
959466588aa7f84ccf79ae36a1d89542eaf9aaec (git) before a61f1b5921761fbaf166231418bc1db301e5bf59
959466588aa7f84ccf79ae36a1d89542eaf9aaec (git) before 5ba8b837b522d7051ef81bacf3d95383ff8edce5
4.14
Any version before 4.14
5.4.294 (semver)
5.10.241 (semver)
5.15.190 (semver)
6.1.138 (semver)
6.6.90 (semver)
6.12.28 (semver)
6.14.6 (semver)
6.15 (original_commit_for_fix)
References
lists.debian.org/debian-lts-announce/2025/10/msg00007.html
lists.debian.org/debian-lts-announce/2025/08/msg00010.html
git.kernel.org/...c/e6b45f4de763b00dc1c55e685e2dd1aaf525d3c1
git.kernel.org/...c/32ae12ce6a9f6bace186ca7335220ff59b6cc3cd
git.kernel.org/...c/967955c9e57f8eebfccc298037d4aaf3d42bc1c9
git.kernel.org/...c/73cf6af13153d62f9b76eff422eea79dbc70f15e
git.kernel.org/...c/bbbf5e0f87078b715e7a665d662a2c0e77f044ae
git.kernel.org/...c/0a188c0e197383683fd093ab1ea6ce9a5869a6ea
git.kernel.org/...c/a61f1b5921761fbaf166231418bc1db301e5bf59
git.kernel.org/...c/5ba8b837b522d7051ef81bacf3d95383ff8edce5