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CVE-2026-22999 net/sched: sch_qfq: do not free existing class in qfq_change_class()

🗓️ 25 Jan 2026 14:36:13Reported by GoogleType 
osv
 osv🔗 osv.dev👁 4 Views

Fixes sch_qfq qfq_change_class to avoid freeing existing class unless new class and qdisc allocated.

Related
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-22999
25 Jan 202614:36
–attackerkb
Tenable Nessus		Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1455)
6 Mar 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1468)
6 Mar 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2026-114 (ALASKERNEL-5.10-2026-114)
19 Mar 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2026-098 (ALASKERNEL-5.15-2026-098)
6 Mar 202600:00
–nessus
Tenable Nessus		Debian dla-4475 : ata-modules-5.10.0-35-armmp-di - security update
11 Feb 202600:00
–nessus
Tenable Nessus		Debian dla-4476 : linux-config-6.1 - security update
11 Feb 202600:00
–nessus
Tenable Nessus		Debian dsa-6126 : ata-modules-6.12.31-armmp-di - security update
9 Feb 202600:00
–nessus
Tenable Nessus		Debian dsa-6127 : affs-modules-6.1.0-37-4kc-malta-di - security update
9 Feb 202600:00
–nessus
Tenable Nessus		EulerOS Virtualization 2.12.1 : kernel (EulerOS-SA-2026-2077)
6 Jun 202600:00
–nessus
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22 Apr 2026 18:29Current
5.2Medium risk
Vulners AI Score5.2
CVSS 3.15.5 - 7.8
EPSS0.00204
SSVC
linux kernelnet schedsch qfqqfq change classfree existing classuaf riskallocation fix
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