CVE-2025-37932
MEDIUM severity · CVSS 5.5
5.5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/0a188c0e197383683fd093ab1ea6ce9a5869a6ea ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/0a188c0e197383683fd093ab1ea6ce9a5869a6eaPatch
- https://git.kernel.org/stable/c/32ae12ce6a9f6bace186ca7335220ff59b6cc3cdPatch
- https://git.kernel.org/stable/c/5ba8b837b522d7051ef81bacf3d95383ff8edce5Patch
- https://git.kernel.org/stable/c/73cf6af13153d62f9b76eff422eea79dbc70f15ePatch
- https://git.kernel.org/stable/c/967955c9e57f8eebfccc298037d4aaf3d42bc1c9Patch
- https://git.kernel.org/stable/c/a61f1b5921761fbaf166231418bc1db301e5bf59Patch
- https://git.kernel.org/stable/c/bbbf5e0f87078b715e7a665d662a2c0e77f044aePatch
- https://git.kernel.org/stable/c/e6b45f4de763b00dc1c55e685e2dd1aaf525d3c1Patch