Vulnerability Details CVE-2021-43056
An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 12.8%
CVSS Severity
CVSS v3 Score 5.5
CVSS v2 Score 4.9
References
- http://www.openwall.com/lists/oss-security/2021/10/28/1
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
- https://git.kernel.org/linus/cdeb5d7d890e14f3b70e8087e745c4a6a7d9f337
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AA7EAPPKWG4LMTQQLNNSKATY6ST2KQFE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBM4FP3IT3JZ2O7EBS7TEOG657N4ZGRE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRAIS3PG4EV5WFLYESR6FXWM4BJJGWVA/
- https://lore.kernel.org/linuxppc-dev/87pmrtbbdt.fsf%40mpe.ellerman.id.au/T/#u
- http://www.openwall.com/lists/oss-security/2021/10/28/1
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
- https://git.kernel.org/linus/cdeb5d7d890e14f3b70e8087e745c4a6a7d9f337
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AA7EAPPKWG4LMTQQLNNSKATY6ST2KQFE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBM4FP3IT3JZ2O7EBS7TEOG657N4ZGRE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRAIS3PG4EV5WFLYESR6FXWM4BJJGWVA/
- https://lore.kernel.org/linuxppc-dev/87pmrtbbdt.fsf%40mpe.ellerman.id.au/T/#u
Products affected by CVE-2021-43056
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cpe:2.3:o:fedoraproject:fedora:33
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cpe:2.3:o:fedoraproject:fedora:34
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cpe:2.3:o:fedoraproject:fedora:35
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cpe:2.3:o:linux:linux_kernel:5.2
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cpe:2.3:o:linux:linux_kernel:5.2.1
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cpe:2.3:o:linux:linux_kernel:5.2.10
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cpe:2.3:o:linux:linux_kernel:5.2.11
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cpe:2.3:o:linux:linux_kernel:5.2.12
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cpe:2.3:o:linux:linux_kernel:5.2.13
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cpe:2.3:o:linux:linux_kernel:5.2.14
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cpe:2.3:o:linux:linux_kernel:5.2.15
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cpe:2.3:o:linux:linux_kernel:5.2.16
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cpe:2.3:o:linux:linux_kernel:5.2.17
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cpe:2.3:o:linux:linux_kernel:5.2.18
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cpe:2.3:o:linux:linux_kernel:5.2.19
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cpe:2.3:o:linux:linux_kernel:5.2.2
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cpe:2.3:o:linux:linux_kernel:5.2.20
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cpe:2.3:o:linux:linux_kernel:5.2.21
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cpe:2.3:o:linux:linux_kernel:5.2.3
-
cpe:2.3:o:linux:linux_kernel:5.2.4
-
cpe:2.3:o:linux:linux_kernel:5.2.5
-
cpe:2.3:o:linux:linux_kernel:5.2.6
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cpe:2.3:o:linux:linux_kernel:5.2.7
-
cpe:2.3:o:linux:linux_kernel:5.2.8
-
cpe:2.3:o:linux:linux_kernel:5.2.9
-
cpe:2.3:o:linux:linux_kernel:5.3
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cpe:2.3:o:linux:linux_kernel:5.3.1
-
cpe:2.3:o:linux:linux_kernel:5.3.10
-
cpe:2.3:o:linux:linux_kernel:5.3.11
-
cpe:2.3:o:linux:linux_kernel:5.3.12
-
cpe:2.3:o:linux:linux_kernel:5.3.13
-
cpe:2.3:o:linux:linux_kernel:5.3.14
-
cpe:2.3:o:linux:linux_kernel:5.3.15
-
cpe:2.3:o:linux:linux_kernel:5.3.16
-
cpe:2.3:o:linux:linux_kernel:5.3.17
-
cpe:2.3:o:linux:linux_kernel:5.3.18
-
cpe:2.3:o:linux:linux_kernel:5.3.2
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cpe:2.3:o:linux:linux_kernel:5.3.3
-
cpe:2.3:o:linux:linux_kernel:5.3.4
-
cpe:2.3:o:linux:linux_kernel:5.3.5
-
cpe:2.3:o:linux:linux_kernel:5.3.6
-
cpe:2.3:o:linux:linux_kernel:5.3.7
-
cpe:2.3:o:linux:linux_kernel:5.3.8
-
cpe:2.3:o:linux:linux_kernel:5.3.9
-
cpe:2.3:o:linux:linux_kernel:5.4
-
cpe:2.3:o:linux:linux_kernel:5.4.0
-
cpe:2.3:o:linux:linux_kernel:5.4.1
-
cpe:2.3:o:linux:linux_kernel:5.4.10
-
cpe:2.3:o:linux:linux_kernel:5.4.11
-
cpe:2.3:o:linux:linux_kernel:5.4.12
-
cpe:2.3:o:linux:linux_kernel:5.4.13
-
cpe:2.3:o:linux:linux_kernel:5.4.14
-
cpe:2.3:o:linux:linux_kernel:5.4.2
-
cpe:2.3:o:linux:linux_kernel:5.4.3
-
cpe:2.3:o:linux:linux_kernel:5.4.4
-
cpe:2.3:o:linux:linux_kernel:5.4.5
-
cpe:2.3:o:linux:linux_kernel:5.4.6
-
cpe:2.3:o:linux:linux_kernel:5.4.7
-
cpe:2.3:o:linux:linux_kernel:5.4.8
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cpe:2.3:o:linux:linux_kernel:5.4.9