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kernel: net/sched: sch_qfq component can be exploited if in qfq_change_agg function happens qfq_enqueue overhead

🗓️ 30 Jan 2024 13:28:36Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 3 Views

Out-of-bounds memory write in qfq_change_agg of sch_qfq allows local crash or privilege escalation.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.8aarch64bpftool0:4.18.0-477.43.1.el8_8bpftool-0:4.18.0-477.43.1.el8_8.aarch64.rpm
Red Hat Enterprise Linux8.8ppc64lebpftool0:4.18.0-477.43.1.el8_8bpftool-0:4.18.0-477.43.1.el8_8.ppc64le.rpm
Red Hat Enterprise Linux8.8s390xbpftool0:4.18.0-477.43.1.el8_8bpftool-0:4.18.0-477.43.1.el8_8.s390x.rpm
Red Hat Enterprise Linux8.8x86_64bpftool0:4.18.0-477.43.1.el8_8bpftool-0:4.18.0-477.43.1.el8_8.x86_64.rpm
Red Hat Enterprise Linux8.8aarch64bpftool-debuginfo0:4.18.0-477.43.1.el8_8bpftool-debuginfo-0:4.18.0-477.43.1.el8_8.aarch64.rpm
Red Hat Enterprise Linux8.8ppc64lebpftool-debuginfo0:4.18.0-477.43.1.el8_8bpftool-debuginfo-0:4.18.0-477.43.1.el8_8.ppc64le.rpm
Red Hat Enterprise Linux8.8s390xbpftool-debuginfo0:4.18.0-477.43.1.el8_8bpftool-debuginfo-0:4.18.0-477.43.1.el8_8.s390x.rpm
Red Hat Enterprise Linux8.8x86_64bpftool-debuginfo0:4.18.0-477.43.1.el8_8bpftool-debuginfo-0:4.18.0-477.43.1.el8_8.x86_64.rpm
Red Hat Enterprise Linux8.8aarch64kernel0:4.18.0-477.43.1.el8_8kernel-0:4.18.0-477.43.1.el8_8.aarch64.rpm
Red Hat Enterprise Linux8.8ppc64lekernel0:4.18.0-477.43.1.el8_8kernel-0:4.18.0-477.43.1.el8_8.ppc64le.rpm
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29 Jun 2026 21:38Current
6.7Medium risk
Vulners AI Score6.7
CVSS 3.17.8
EPSS0.00274
SSVC
CWE-787
qfq_change_aggsch_qfqnet schedtraffic controllinux kernelprivilege escalationlocal usercrashout of bounds
3