Improper Input Validation Affecting kernel-rt package, versions <0:4.18.0-305.rt7.72.el8
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRT-2103836
- published 26 Jul 2021
- disclosed 25 Sep 2020
Introduced: 25 Sep 2020
CVE-2020-25643 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt to version 0:4.18.0-305.rt7.72.el8 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:8 relevant fixed versions and status.
A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
- https://security.netapp.com/advisory/ntap-20201103-0002/
- https://access.redhat.com/security/cve/CVE-2020-25643
- https://www.debian.org/security/2020/dsa-4774
- https://bugzilla.redhat.com/show_bug.cgi?id=1879981
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=66d42ed8b25b64eb63111a2b8582c5afc8bf1105
- https://lists.debian.org/debian-lts-announce/2020/10/msg00028.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-2021:1739
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html
- https://www.starwindsoftware.com/security/sw-20210325-0002/