178 lines
13 KiB
XML
178 lines
13 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<cvrfdoc xmlns="http://www.icasi.org/CVRF/schema/cvrf/1.1" xmlns:cvrf="http://www.icasi.org/CVRF/schema/cvrf/1.1">
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<DocumentTitle xml:lang="en">An update for kernel is now available for openEuler-20.03-LTS-SP1</DocumentTitle>
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<DocumentType>Security Advisory</DocumentType>
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<DocumentPublisher Type="Vendor">
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<ContactDetails>openeuler-security@openeuler.org</ContactDetails>
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<IssuingAuthority>openEuler security committee</IssuingAuthority>
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</DocumentPublisher>
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<DocumentTracking>
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<Identification>
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<ID>openEuler-SA-2023-1146</ID>
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</Identification>
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<Status>Final</Status>
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<Version>1.0</Version>
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<RevisionHistory>
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<Revision>
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<Number>1.0</Number>
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<Date>2023-03-04</Date>
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<Description>Initial</Description>
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</Revision>
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</RevisionHistory>
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<InitialReleaseDate>2023-03-04</InitialReleaseDate>
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<CurrentReleaseDate>2023-03-04</CurrentReleaseDate>
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<Generator>
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<Engine>openEuler SA Tool V1.0</Engine>
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<Date>2023-03-04</Date>
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</Generator>
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</DocumentTracking>
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<DocumentNotes>
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<Note Title="Synopsis" Type="General" Ordinal="1" xml:lang="en">kernel security update</Note>
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<Note Title="Summary" Type="General" Ordinal="2" xml:lang="en">An update for kernel is now available for openEuler-20.03-LTS-SP1.</Note>
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<Note Title="Description" Type="General" Ordinal="3" xml:lang="en">The Linux Kernel, the operating system core itself.
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Security Fix(es):
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The Linux kernel does not correctly mitigate SMT attacks, as discovered
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through a strange pattern in the kernel API using STIBP as a mitigation[1
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<https://docs.kernel.org/userspace-api/spec_ctrl.html>], leaving the
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process exposed for a short period of time after a syscall. The kernel also
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does not issue an IBPB immediately during the syscall.
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The ib_prctl_set [2
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<https://elixir.bootlin.com/linux/v5.15.56/source/arch/x86/kernel/cpu/bugs.c#L1467>]function
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updates the Thread Information Flags (TIFs) for the task and updates the
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SPEC_CTRL MSR on the function __speculation_ctrl_update [3
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<https://elixir.bootlin.com/linux/v5.15.56/source/arch/x86/kernel/process.c#L557>],
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but the IBPB is only issued on the next schedule, when the TIF bits are
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checked. This leaves the victim vulnerable to values already injected on
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the BTB, prior to the prctl syscall.
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The behavior is only corrected after a reschedule of the task happens.
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Furthermore, the kernel entrance (due to the syscall itself), does not
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issue an IBPB in the default scenarios (i.e., when the kernel protects
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itself via retpoline or eIBRS).(CVE-2023-0045)
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REMAP cmd of SVM driver can be used to remap read only memory as read-write, then cause read only memory/file modified..(CVE-2021-33639)</Note>
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<Note Title="Topic" Type="General" Ordinal="4" xml:lang="en">An update for kernel is now available for openEuler-20.03-LTS-SP1.
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openEuler Security has rated this update as having a security impact of medium. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.</Note>
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<Note Title="Severity" Type="General" Ordinal="5" xml:lang="en">Medium</Note>
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<Note Title="Affected Component" Type="General" Ordinal="6" xml:lang="en">kernel</Note>
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</DocumentNotes>
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<DocumentReferences>
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<Reference Type="Self">
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<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1146</URL>
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</Reference>
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<Reference Type="openEuler CVE">
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<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-0045</URL>
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<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-33639</URL>
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</Reference>
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<Reference Type="Other">
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<URL>https://nvd.nist.gov/vuln/detail/CVE-2023-0045</URL>
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<URL>https://nvd.nist.gov/vuln/detail/CVE-2021-33639</URL>
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</Reference>
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</DocumentReferences>
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<ProductTree xmlns="http://www.icasi.org/CVRF/schema/prod/1.1">
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<Branch Type="Product Name" Name="openEuler">
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<FullProductName ProductID="openEuler-20.03-LTS-SP1" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">openEuler-20.03-LTS-SP1</FullProductName>
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</Branch>
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<Branch Type="Package Arch" Name="aarch64">
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<FullProductName ProductID="perf-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">perf-debuginfo-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="kernel-debugsource-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-debugsource-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="kernel-devel-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-devel-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="bpftool-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">bpftool-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="python2-perf-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python2-perf-debuginfo-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="kernel-tools-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-tools-debuginfo-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="kernel-tools-devel-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-tools-devel-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="python3-perf-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-perf-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="bpftool-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">bpftool-debuginfo-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="kernel-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="kernel-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-debuginfo-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="python3-perf-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-perf-debuginfo-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="kernel-tools-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-tools-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="kernel-source-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-source-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="python2-perf-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python2-perf-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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<FullProductName ProductID="perf-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">perf-4.19.90-2302.5.0.0190.oe1.aarch64.rpm</FullProductName>
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</Branch>
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<Branch Type="Package Arch" Name="src">
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<FullProductName ProductID="kernel-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-4.19.90-2302.5.0.0190.oe1.src.rpm</FullProductName>
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</Branch>
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<Branch Type="Package Arch" Name="x86_64">
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<FullProductName ProductID="perf-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">perf-debuginfo-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="perf-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">perf-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="kernel-devel-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-devel-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="kernel-tools-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-tools-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="kernel-source-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-source-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="kernel-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="kernel-tools-devel-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-tools-devel-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="python2-perf-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python2-perf-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="python2-perf-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python2-perf-debuginfo-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="python3-perf-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-perf-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="bpftool-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">bpftool-debuginfo-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="kernel-tools-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-tools-debuginfo-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="bpftool-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">bpftool-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="python3-perf-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-perf-debuginfo-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="kernel-debuginfo-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-debuginfo-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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<FullProductName ProductID="kernel-debugsource-4.19.90-2302.5.0.0190" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">kernel-debugsource-4.19.90-2302.5.0.0190.oe1.x86_64.rpm</FullProductName>
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</Branch>
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</ProductTree>
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<Vulnerability Ordinal="1" xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1">
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<Notes>
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<Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">The Linux kernel does not correctly mitigate SMT attacks, as discoveredthrough a strange pattern in the kernel API using STIBP as a mitigation[1<https://docs.kernel.org/userspace-api/spec_ctrl.html>], leaving theprocess exposed for a short period of time after a syscall. The kernel alsodoes not issue an IBPB immediately during the syscall.The ib_prctl_set [2<https://elixir.bootlin.com/linux/v5.15.56/source/arch/x86/kernel/cpu/bugs.c#L1467>]functionupdates the Thread Information Flags (TIFs) for the task and updates theSPEC_CTRL MSR on the function __speculation_ctrl_update [3<https://elixir.bootlin.com/linux/v5.15.56/source/arch/x86/kernel/process.c#L557>],but the IBPB is only issued on the next schedule, when the TIF bits arechecked. This leaves the victim vulnerable to values already injected onthe BTB, prior to the prctl syscall.The behavior is only corrected after a reschedule of the task happens.Furthermore, the kernel entrance (due to the syscall itself), does notissue an IBPB in the default scenarios (i.e., when the kernel protectsitself via retpoline or eIBRS).</Note>
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</Notes>
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<ReleaseDate>2023-03-04</ReleaseDate>
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<CVE>CVE-2023-0045</CVE>
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<ProductStatuses>
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<Status Type="Fixed">
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<ProductID>openEuler-20.03-LTS-SP1</ProductID>
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</Status>
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</ProductStatuses>
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<Threats>
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<Threat Type="Impact">
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<Description>Medium</Description>
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</Threat>
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</Threats>
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<CVSSScoreSets>
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<ScoreSet>
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<BaseScore>5.1</BaseScore>
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<Vector>AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N</Vector>
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</ScoreSet>
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</CVSSScoreSets>
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<Remediations>
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<Remediation Type="Vendor Fix">
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<Description>kernel security update</Description>
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<DATE>2023-03-04</DATE>
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<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1146</URL>
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</Remediation>
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</Remediations>
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</Vulnerability>
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<Vulnerability Ordinal="2" xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1">
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<Notes>
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<Note Title="Vulnerability Description" Type="General" Ordinal="2" xml:lang="en">REMAP cmd of SVM driver can be used to remap read only memory as read-write, then cause read only memory/file modified.</Note>
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</Notes>
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<ReleaseDate>2023-03-04</ReleaseDate>
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<CVE>CVE-2021-33639</CVE>
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<ProductStatuses>
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<Status Type="Fixed">
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<ProductID>openEuler-20.03-LTS-SP1</ProductID>
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</Status>
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</ProductStatuses>
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<Threats>
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<Threat Type="Impact">
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<Description>Medium</Description>
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</Threat>
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</Threats>
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<CVSSScoreSets>
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<ScoreSet>
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<BaseScore>6.7</BaseScore>
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<Vector>AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H</Vector>
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</ScoreSet>
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</CVSSScoreSets>
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<Remediations>
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<Remediation Type="Vendor Fix">
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<Description>kernel security update</Description>
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<DATE>2023-03-04</DATE>
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<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1146</URL>
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</Remediation>
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</Remediations>
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</Vulnerability>
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</cvrfdoc> |