UnratedFix available
sch_htb: make htb_qlen_notify() idempotent
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.241, 5.15.190, 5.4.294, 6.1.138, 6.12.28, 6.14.6, 6.6.90
- CVEs
- CVE-2025-37932
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 19:46 UTC · Revision 1
Source evidence
sch_htb: make htb_qlen_notify() idempotent
core-osv · Original sourcePublished 20 May 2025, 15:21 UTC
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.
osv:CVE-2025-37932
Kernel
Fixed versions: 5.4.294, 5.10.241, 5.15.190, 6.1.138, 6.6.90, 6.12.28, 6.14.6
Complete source record
{
"id": "45281de4d557c9f46122a35cf9c97cbceaf99aaa27431829e0560606df5b3fd0",
"url": "https://osv.dev/vulnerability/CVE-2025-37932",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "sch_htb: make htb_qlen_notify() idempotent",
"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.",
"evidence": "osv:CVE-2025-37932",
"products": [
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"prerequisites": [],
"fixed_versions": [
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"evidence": "/affected/1/ranges"
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{
"value": "5.10.241",
"evidence": "/affected/1/ranges"
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{
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{
"value": "6.1.138",
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{
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"evidence": "/affected/1/ranges"
},
{
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{
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}
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"affected_versions": []
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],
"severity": "unknown",
"structured": {
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"aliases": [
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"affected": [
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"type": "GIT",
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{
"ranges": [
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"events": [
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{
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{
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"events": [
{
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{
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{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.7.0"
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{
"fixed": "6.12.28"
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{
"type": "ECOSYSTEM",
"events": [
{
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{
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],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-37932.json"
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],
"modified": "2026-10-28T02:30:23.032361221Z",
"provider": "osv",
"references": [
"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",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37932.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-37932",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37932.json"
}
},
"related_cves": [
{
"value": "CVE-2025-37932",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 489370,
"published_at": "2025-05-20T15:21:57.469+00:00"
}