Use After Free Affecting kernel-rt package, versions <0:3.10.0-693.rt56.617.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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Test your applications- Snyk IDSNYK-CENTOS7-KERNELRT-2088264
- published26 Jul 2021
- disclosed11 Jan 2017
Introduced: 11 Jan 2017
CVE-2017-2584 (opens in a new tab)How to fix?
Upgrade Centos:7 kernel-rt to version 0:3.10.0-693.rt56.617.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.
arch/x86/kvm/emulate.c in the Linux kernel through 4.9.3 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free) via a crafted application that leverages instruction emulation for fxrstor, fxsave, sgdt, and sidt.
References
- http://www.securityfocus.com/bid/95430
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e74d
- https://bugzilla.redhat.com/show_bug.cgi?id=1413001
- https://github.com/torvalds/linux/commit/129a72a0d3c8e139a04512325384fe5ac119e74d
- https://access.redhat.com/security/cve/CVE-2017-2584
- http://www.debian.org/security/2017/dsa-3791
- http://www.openwall.com/lists/oss-security/2017/01/13/7
- https://access.redhat.com/errata/RHSA-2017:2077
- http://www.securitytracker.com/id/1037603
- https://usn.ubuntu.com/3754-1/