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kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure

🗓️ 09 Jun 2020 18:46:38Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 8 Views

PowerPC Linux kernel has incomplete Spectre RSB mitigation due to faulty cache flush, enabling leakage.

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ibm		Security Bulletin: IBM Data Risk Manager is affected by multiple vulnerabilities
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10 Aug 202015:57
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bdu_fstec		The vulnerability of the arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c components of the Linux operating system allows a hacker to gain unauthorized access to certain information.
26 Jun 202000:00
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nessus		CentOS 8 : kernel (CESA-2020:1372)
1 Feb 202100:00
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nessus		CentOS 7 : kernel-alt (RHSA-2020:0174)
9 Oct 202400:00
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nessus		CentOS 7 : kernel (RHSA-2020:1016)
10 Apr 202000:00
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nessus		CentOS 6 : kernel (RHSA-2020:2933)
9 Oct 202400:00
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nessus		EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-1012)
2 Jan 202000:00
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nessus		EulerOS 2.0 SP5 : kernel (EulerOS-SA-2020-1112)
24 Feb 202000:00
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.0ppc64lebpftool4.18.0-80.23.2.el8_0bpftool-4.18.0-80.23.2.el8_0.ppc64le.rpm
Red Hat Enterprise Linux8.0x86_64bpftool4.18.0-80.23.2.el8_0bpftool-4.18.0-80.23.2.el8_0.x86_64.rpm
Red Hat Enterprise Linux8.0ppc64lebpftool-debuginfo4.18.0-80.23.2.el8_0bpftool-debuginfo-4.18.0-80.23.2.el8_0.ppc64le.rpm
Red Hat Enterprise Linux8.0x86_64bpftool-debuginfo4.18.0-80.23.2.el8_0bpftool-debuginfo-4.18.0-80.23.2.el8_0.x86_64.rpm
Red Hat Enterprise Linux8.0ppc64lekernel4.18.0-80.23.2.el8_0kernel-4.18.0-80.23.2.el8_0.ppc64le.rpm
Red Hat Enterprise Linux8.0x86_64kernel4.18.0-80.23.2.el8_0kernel-4.18.0-80.23.2.el8_0.x86_64.rpm
Red Hat Enterprise Linux8.0noarchkernel-abi-whitelists4.18.0-80.23.2.el8_0kernel-abi-whitelists-4.18.0-80.23.2.el8_0.noarch.rpm
Red Hat Enterprise Linux8.0ppc64lekernel-core4.18.0-80.23.2.el8_0kernel-core-4.18.0-80.23.2.el8_0.ppc64le.rpm
Red Hat Enterprise Linux8.0x86_64kernel-core4.18.0-80.23.2.el8_0kernel-core-4.18.0-80.23.2.el8_0.x86_64.rpm
Red Hat Enterprise Linux8.0ppc64lekernel-debug4.18.0-80.23.2.el8_0kernel-debug-4.18.0-80.23.2.el8_0.ppc64le.rpm
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28 Jun 2026 12:33Current
6.4Medium risk
Vulners AI Score6.4
CVSS 21.9
CVSS 3.14.7
EPSS0.00736
CWE-200
PowerPCSpectre RSBLinux kernelCache flushInformation leakageSide channelUnprivileged user
8