NULL Pointer Dereference Affecting kernel-rt package, versions <0:3.10.0-514.10.2.rt56.435.el7
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-CENTOS7-KERNELRT-2077625
- published26 Jul 2021
- disclosed2 Nov 2016
Introduced: 2 Nov 2016
CVE-2016-8630 (opens in a new tab)How to fix?
Upgrade Centos:7 kernel-rt to version 0:3.10.0-514.10.2.rt56.435.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
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.
References
- http://www.securityfocus.com/bid/94459
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d9092f52d7e61dd1557f2db2400ddb430e85937e
- https://bugzilla.redhat.com/show_bug.cgi?id=1393350
- https://github.com/torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937e
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7
- https://access.redhat.com/security/cve/CVE-2016-8630
- http://www.openwall.com/lists/oss-security/2016/11/22/3
- http://rhn.redhat.com/errata/RHSA-2017-0386.html
- http://rhn.redhat.com/errata/RHSA-2017-0387.html
- https://access.redhat.com/errata/RHSA-2017:0387