VulnerabilityModified
CVE-2016-8630
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.
MEDIUM 5.5EPSS 0.36%
Does this matter?
Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.36% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-284, CWE-476
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.