CVE-2025-37932

sch_htb: make htb_qlen_notify() idempotent

State: Published
Severity: Not scored
Published: May 20, 2025
Updated: May 11, 2026
Reserved: Apr 16, 2025

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	959466588aa7f84ccf79ae36a1d89542eaf9aaec to before e6b45f4de763b00dc1c55e685e2dd1aaf525d3c1Affected 959466588aa7f84ccf79ae36a1d89542eaf9aaec to before 32ae12ce6a9f6bace186ca7335220ff59b6cc3cdAffected 959466588aa7f84ccf79ae36a1d89542eaf9aaec to before 967955c9e57f8eebfccc298037d4aaf3d42bc1c9Affected 959466588aa7f84ccf79ae36a1d89542eaf9aaec to before 73cf6af13153d62f9b76eff422eea79dbc70f15eAffected 959466588aa7f84ccf79ae36a1d89542eaf9aaec to before bbbf5e0f87078b715e7a665d662a2c0e77f044aeAffected 959466588aa7f84ccf79ae36a1d89542eaf9aaec to before 0a188c0e197383683fd093ab1ea6ce9a5869a6eaAffected 959466588aa7f84ccf79ae36a1d89542eaf9aaec to before a61f1b5921761fbaf166231418bc1db301e5bf59Affected 959466588aa7f84ccf79ae36a1d89542eaf9aaec to before 5ba8b837b522d7051ef81bacf3d95383ff8edce5Affected
LinuxLinux	4.14Affected before 4.14Not affected 5.4.294 through 5.4.Not affected 5.10.241 through 5.10.Not affected 5.15.190 through 5.15.Not affected 6.1.138 through 6.1.Not affected 6.6.90 through 6.6.Not affected 6.12.28 through 6.12.Not affected 6.14.6 through 6.14.*Not affected 6.15 and laterNot affected

Product

Versions

LinuxLinux

959466588aa7f84ccf79ae36a1d89542eaf9aaec to before e6b45f4de763b00dc1c55e685e2dd1aaf525d3c1Affected
959466588aa7f84ccf79ae36a1d89542eaf9aaec to before 32ae12ce6a9f6bace186ca7335220ff59b6cc3cdAffected
959466588aa7f84ccf79ae36a1d89542eaf9aaec to before 967955c9e57f8eebfccc298037d4aaf3d42bc1c9Affected
959466588aa7f84ccf79ae36a1d89542eaf9aaec to before 73cf6af13153d62f9b76eff422eea79dbc70f15eAffected
959466588aa7f84ccf79ae36a1d89542eaf9aaec to before bbbf5e0f87078b715e7a665d662a2c0e77f044aeAffected
959466588aa7f84ccf79ae36a1d89542eaf9aaec to before 0a188c0e197383683fd093ab1ea6ce9a5869a6eaAffected
959466588aa7f84ccf79ae36a1d89542eaf9aaec to before a61f1b5921761fbaf166231418bc1db301e5bf59Affected
959466588aa7f84ccf79ae36a1d89542eaf9aaec to before 5ba8b837b522d7051ef81bacf3d95383ff8edce5Affected

LinuxLinux

4.14Affected
before 4.14Not affected
5.4.294 through 5.4.*Not affected
5.10.241 through 5.10.*Not affected
5.15.190 through 5.15.*Not affected
6.1.138 through 6.1.*Not affected
6.6.90 through 6.6.*Not affected
6.12.28 through 6.12.*Not affected
6.14.6 through 6.14.*Not affected
6.15 and laterNot affected

References

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