Race Condition Affecting kernel-rt package, versions <0:3.10.0-1160.62.1.rt56.1203.el7
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-CENTOS7-KERNELRT-2320342
- published 15 Dec 2021
- disclosed 3 Dec 2021
Introduced: 3 Dec 2021
CVE-2021-4083 Open this link in a new tabHow to fix?
Upgrade Centos:7 kernel-rt to version 0:3.10.0-1160.62.1.rt56.1203.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.
A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4.
References
- https://access.redhat.com/security/cve/CVE-2021-4083
- https://access.redhat.com/errata/RHSA-2022:1199
- https://bugzilla.redhat.com/show_bug.cgi?id=2029923
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://security.netapp.com/advisory/ntap-20220217-0005/
- https://www.debian.org/security/2022/dsa-5096
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=054aa8d439b9