CVE-2016-5412

Severity

46%

Complexity

31%

Confidentiality

115%

arch/powerpc/kvm/book3s_hv_rmhandlers.S in the Linux kernel through 4.7 on PowerPC platforms, when CONFIG_KVM_BOOK3S_64_HV is enabled, allows guest OS users to cause a denial of service (host OS infinite loop) by making a H_CEDE hypercall during the existence of a suspended transaction.

arch/powerpc/kvm/book3s_hv_rmhandlers.S in the Linux kernel through 4.7 on PowerPC platforms, when CONFIG_KVM_BOOK3S_64_HV is enabled, allows guest OS users to cause a denial of service (host OS infinite loop) by making a H_CEDE hypercall during the existence of a suspended transaction.

CVSS 3.0 Base Score 6.5. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).

CVSS 2.0 Base Score 4.6. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:S/C:N/I:N/A:C).

Overview

First reported 8 years ago

2016-08-06 20:59:00

Last updated 7 years ago

2018-01-05 02:31:00

Affected Software

Linux Kernel

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=93d17397e4e2182fdaad503e2f9da46202c0f1c3

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f024ee098476a3e620232e4a78cfac505f121245

RHSA-2016:2574

[oss-security] 20160728 CVE-2016-5412 Kernel: powerpc: kvm: Infinite loop via H_CEDE hypercall when running under hypervisor-mode

Mailing List

https://bugzilla.redhat.com/show_bug.cgi?id=1349916

Issue Tracking, Patch, Third Party Advisory

https://github.com/torvalds/linux/commit/93d17397e4e2182fdaad503e2f9da46202c0f1c3

https://github.com/torvalds/linux/commit/f024ee098476a3e620232e4a78cfac505f121245

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