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kernel: Linux kernel: Use-after-free in traffic control (act_ct) may lead to denial of service or privilege escalation

🗓️ 28 May 2026 08:47:08Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 12 Views

Kernel use-after-free in traffic control act_ct with non-ingress qdiscs may trigger denial of service.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.10aarch64bpftool4.18.0-553.126.1.el8_10bpftool-4.18.0-553.126.1.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lebpftool4.18.0-553.126.1.el8_10bpftool-4.18.0-553.126.1.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xbpftool4.18.0-553.126.1.el8_10bpftool-4.18.0-553.126.1.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64bpftool4.18.0-553.126.1.el8_10bpftool-4.18.0-553.126.1.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64bpftool-debuginfo4.18.0-553.126.1.el8_10bpftool-debuginfo-4.18.0-553.126.1.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lebpftool-debuginfo4.18.0-553.126.1.el8_10bpftool-debuginfo-4.18.0-553.126.1.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xbpftool-debuginfo4.18.0-553.126.1.el8_10bpftool-debuginfo-4.18.0-553.126.1.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64bpftool-debuginfo4.18.0-553.126.1.el8_10bpftool-debuginfo-4.18.0-553.126.1.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64kernel4.18.0-553.126.1.el8_10kernel-4.18.0-553.126.1.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lekernel4.18.0-553.126.1.el8_10kernel-4.18.0-553.126.1.el8_10.ppc64le.rpm
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30 Jul 2026 08:53Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.8
EPSS0.00125
12