CVE-2017-2583

Description

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.

References

https://usn.ubuntu.com/3754-1/

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

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

https://access.redhat.com/errata/RHSA-2017:1616

https://access.redhat.com/errata/RHSA-2017:1615

http://www.securityfocus.com/bid/95673

http://www.openwall.com/lists/oss-security/2017/01/19/2

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

http://www.debian.org/security/2017/dsa-3791

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

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3