Race Condition Affecting kernel-rt-kvm package, versions <0:4.18.0-372.9.1.rt7.166.el8
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTKVM-1970532
- published 20 Sep 2021
- disclosed 14 Sep 2021
Introduced: 14 Sep 2021
CVE-2021-3752 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-kvm to version 0:4.18.0-372.9.1.rt7.166.el8 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 use-after-free flaw was found in the Linux kernel’s Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
References
- https://access.redhat.com/security/cve/CVE-2021-3752
- https://access.redhat.com/errata/RHSA-2022:1975
- https://lore.kernel.org/lkml/20211115165435.133245729@linuxfoundation.org/
- https://bugzilla.redhat.com/show_bug.cgi?id=1999544
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://lore.kernel.org/lkml/20211115165435.133245729%40linuxfoundation.org/
- https://security.netapp.com/advisory/ntap-20220318-0009/
- https://www.debian.org/security/2022/dsa-5096
- https://www.openwall.com/lists/oss-security/2021/09/15/4
- https://www.oracle.com/security-alerts/cpujul2022.html