Description
The x86_decode_insn function in arch/x86/kvm/emulate.c in the Linux kernel before 4.8.7, when KVM is enabled, allows local users to cause a denial of service (host OS crash) via a certain use of a ModR/M byte in an undefined instruction.
Metrics
CVSS 3.0 5.5/10
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d9092f52d7e61dd1557f2db2400ddb430e85937eIssue Tracking, Patch, Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0386.html
- http://rhn.redhat.com/errata/RHSA-2017-0387.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7Release Notes
- http://www.openwall.com/lists/oss-security/2016/11/22/3Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/94459
- https://bugzilla.redhat.com/show_bug.cgi?id=1393350Issue Tracking
- https://github.com/torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937eIssue Tracking, Patch, Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d9092f52d7e61dd1557f2db2400ddb430e85937eIssue Tracking, Patch, Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0386.html
- http://rhn.redhat.com/errata/RHSA-2017-0387.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7Release Notes
- http://www.openwall.com/lists/oss-security/2016/11/22/3Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/94459
- https://bugzilla.redhat.com/show_bug.cgi?id=1393350Issue Tracking
- https://github.com/torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937eIssue Tracking, Patch, Third Party Advisory
Timeline
- Published
- Nov 28, 2016
- Last modified
- Jun 17, 2026
- NVD status
- Modified