Out-of-bounds Write Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-305.3.1.rt7.75.el8_4
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTDEBUGKVM-2111970
- published 26 Jul 2021
- disclosed 13 Apr 2021
Introduced: 13 Apr 2021
CVE-2021-3501 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-debug-kvm to version 0:4.18.0-305.3.1.rt7.75.el8_4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-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 in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.
References
- https://security.netapp.com/advisory/ntap-20210618-0008/
- https://access.redhat.com/security/cve/CVE-2021-3501
- https://bugzilla.redhat.com/show_bug.cgi?id=1950136
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a
- https://access.redhat.com/errata/RHSA-2021:2169