CVE-2017-2583

Severity

46%

Complexity

39%

Confidentiality

106%

The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5 improperly emulates a "MOV SS, NULL selector" instruction, which allows guest OS users to cause a denial of service (guest OS crash) or gain guest OS privileges via a crafted application.

CVSS 3.0 Base Score 8.4. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

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

Overview

First reported 8 years ago

2017-02-06 06:59:00

Last updated 5 years ago

2019-10-03 00:03:00

Affected Software

Linux Kernel

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=33ab91103b3415e12457e3104f0e4517ce12d0f3

Issue Tracking, Third Party Advisory

DSA-3791

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5

Release Notes, Vendor Advisory

[oss-security] 20170119 CVE-2017-2583 Kernel: Kvm: vmx/svm potential privilege escalation inside guest

Mailing List, Third Party Advisory

95673

Third Party Advisory, VDB Entry

RHSA-2017:1615

RHSA-2017:1616

https://bugzilla.redhat.com/show_bug.cgi?id=1414735

Issue Tracking, Patch

https://github.com/torvalds/linux/commit/33ab91103b3415e12457e3104f0e4517ce12d0f3

Issue Tracking, Patch, Third Party Advisory

USN-3754-1

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