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kernel: srcu: Delegate work to the boot cpu if using SRCU_SIZE_SMALL

🗓️ 07 Nov 2023 09:03:12Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 5 Views

Linux SRCU may queue work to a non-existent boot CPU when CPU zero is offline, causing hang and denial of service.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.3aarch64bpftool0:7.2.0-362.8.1.el9_3bpftool-0:7.2.0-362.8.1.el9_3.aarch64.rpm
Red Hat Enterprise Linux9.3ppc64lebpftool0:7.2.0-362.8.1.el9_3bpftool-0:7.2.0-362.8.1.el9_3.ppc64le.rpm
Red Hat Enterprise Linux9.3s390xbpftool0:7.2.0-362.8.1.el9_3bpftool-0:7.2.0-362.8.1.el9_3.s390x.rpm
Red Hat Enterprise Linux9.3x86_64bpftool0:7.2.0-362.8.1.el9_3bpftool-0:7.2.0-362.8.1.el9_3.x86_64.rpm
Red Hat Enterprise Linux9.3aarch64bpftool-debuginfo0:7.2.0-362.8.1.el9_3bpftool-debuginfo-0:7.2.0-362.8.1.el9_3.aarch64.rpm
Red Hat Enterprise Linux9.3ppc64lebpftool-debuginfo0:7.2.0-362.8.1.el9_3bpftool-debuginfo-0:7.2.0-362.8.1.el9_3.ppc64le.rpm
Red Hat Enterprise Linux9.3s390xbpftool-debuginfo0:7.2.0-362.8.1.el9_3bpftool-debuginfo-0:7.2.0-362.8.1.el9_3.s390x.rpm
Red Hat Enterprise Linux9.3x86_64bpftool-debuginfo0:7.2.0-362.8.1.el9_3bpftool-debuginfo-0:7.2.0-362.8.1.el9_3.x86_64.rpm
Red Hat Enterprise Linux9.3aarch64kernel0:5.14.0-362.8.1.el9_3kernel-0:5.14.0-362.8.1.el9_3.aarch64.rpm
Red Hat Enterprise Linux9.3ppc64lekernel0:5.14.0-362.8.1.el9_3kernel-0:5.14.0-362.8.1.el9_3.ppc64le.rpm
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08 Jul 2026 12:22Current
7.2High risk
Vulners AI Score7.2
CVSS 3.15.5
EPSS0.00134
5