Out-of-bounds Write Affecting kernel-rt-kvm package, versions <0:4.18.0-193.28.1.rt13.77.el8_2
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTKVM-2052309
- published 26 Jul 2021
- disclosed 28 Jul 2020
Introduced: 28 Jul 2020
CVE-2020-14331 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-kvm to version 0:4.18.0-193.28.1.rt13.77.el8_2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-kvm package and not the kernel-rt-kvm package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
A flaw was found in the Linux kernel’s implementation of the invert video code on VGA consoles when a local attacker attempts to resize the console, calling an ioctl VT_RESIZE, which causes an out-of-bounds write to occur. This flaw allows a local user with access to the VGA console to crash the system, potentially escalating their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
- https://access.redhat.com/security/cve/CVE-2020-14331
- https://bugzilla.redhat.com/show_bug.cgi?id=1858679
- https://lists.openwall.net/linux-kernel/2020/07/29/234
- https://www.openwall.com/lists/oss-security/2020/07/28/2
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
- https://access.redhat.com/errata/RHSA-2020:4289