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.

8.4

CVSS

Severity: High

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.10%

Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory kernel.org

Affected: n/a n/a

References

Link	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1414735	patch issue tracking
https://github.com/torvalds/linux/commit/33ab91103b3415e12457e3104f0e4517ce12d0f3	patch third party advisory issue tracking
https://access.redhat.com/errata/RHSA-2017:1615	vendor advisory
http://www.openwall.com/lists/oss-security/2017/01/19/2	third party advisory mailing list
https://usn.ubuntu.com/3754-1/	vendor advisory
http://www.securityfocus.com/bid/95673	third party advisory vdb entry
https://access.redhat.com/errata/RHSA-2017:1616	vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=33ab91103b3415e12457e3104f0e4517ce12d0f3	third party advisory issue tracking
http://www.debian.org/security/2017/dsa-3791	vendor advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5	release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-2583?: CVE-2017-2583 has been scored as a high severity vulnerability.
How to fix CVE-2017-2583?: To fix CVE-2017-2583, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-2583 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2017-2583 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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