CVE-2025-37932
Estado: AnalizadaMedia (5.5)—
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.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.23%
- Percentil entre todas las CVEs puntuadas: 12
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/0a188c0e197383683fd093ab1ea6ce9a5869a6ea
- https://git.kernel.org/stable/c/32ae12ce6a9f6bace186ca7335220ff59b6cc3cd
- https://git.kernel.org/stable/c/5ba8b837b522d7051ef81bacf3d95383ff8edce5
- https://git.kernel.org/stable/c/73cf6af13153d62f9b76eff422eea79dbc70f15e
- https://git.kernel.org/stable/c/967955c9e57f8eebfccc298037d4aaf3d42bc1c9
- https://git.kernel.org/stable/c/a61f1b5921761fbaf166231418bc1db301e5bf59
- https://git.kernel.org/stable/c/bbbf5e0f87078b715e7a665d662a2c0e77f044ae
- https://git.kernel.org/stable/c/e6b45f4de763b00dc1c55e685e2dd1aaf525d3c1
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsch_htb: make htb_qlen_notify() idempotent\n\nhtb_qlen_notify() always deactivates the HTB class and in fact could\ntrigger a warning if it is already deactivated. Therefore, it is not\nidempotent and not friendly to its callers, like fq_codel_dequeue().\n\nLet's make it idempotent to ease qdisc_tree_reduce_backlog() callers'\nlife."
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sch_htb: hacer idempotente a htb_qlen_notify(). htb_qlen_notify() siempre desactiva la clase HTB y, de hecho, podría generar una advertencia si ya está desactivada. Por lo tanto, no es idempotente ni incompatible con quienes la llaman, como fq_codel_dequeue(). Hagámosla idempotente para facilitar la tarea a quienes llaman a qdisc_tree_reduce_backlog()."
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