HighFix available
net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag This is more of a preventive patch to make the code more consistent and to prevent possible exploits that employ child qlen manipulations on qfq. use cl_is_active instead of relying on the child qdisc's qlen to determine class activation.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.249, 5.15.199, 6.1.162, 6.12.68, 6.18.8, 6.6.122
- CVEs
- CVE-2026-23105
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 03:55 UTC · Revision 1
Source evidence
net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag
core-osv · Original sourcePublished 4 Feb 2026, 16:08 UTC
In the Linux kernel, the following vulnerability has been resolved: net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag This is more of a preventive patch to make the code more consistent and to prevent possible exploits that employ child qlen manipulations on qfq. use cl_is_active instead of relying on the child qdisc's qlen to determine class activation.
osv:CVE-2026-23105
Kernel
Fixed versions: 5.10.249, 5.15.199, 6.1.162, 6.6.122, 6.12.68, 6.18.8
Complete source record
{
"id": "619e2dd9bb796510733a077406e9f871b490de221ddabb87095bb2b5b2fb6f3f",
"url": "https://osv.dev/vulnerability/CVE-2026-23105",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag",
"summary": "In the Linux kernel, the following vulnerability has been resolved: net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag This is more of a preventive patch to make the code more consistent and to prevent possible exploits that employ child qlen manipulations on qfq. use cl_is_active instead of relying on the child qdisc's qlen to determine class activation.",
"evidence": "osv:CVE-2026-23105",
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"severity": "high",
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"package": {
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"ecosystem": "Linux"
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"modified": "2026-10-28T02:30:33.013095178Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/93b8635974fb050c43d07e35e5edfe6e685ca28a",
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"https://git.kernel.org/stable/c/fac2c67bb2bb732eae4283e45fc338af7e08c254",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23105.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-23105",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23105.json"
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},
"related_cves": [
{
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 500184,
"published_at": "2026-02-04T16:08:26.376+00:00"
}