Allocation of Resources Without Limits or Throttling Affecting kernel-tools package, versions <0:4.18.0-372.9.1.el8
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELTOOLS-1969161
- published 1 Sep 2021
- disclosed 15 Jul 2021
Introduced: 15 Jul 2021
CVE-2021-3759 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-tools to version 0:4.18.0-372.9.1.el8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-tools package and not the kernel-tools package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.
References
- https://access.redhat.com/security/cve/CVE-2021-3759
- https://access.redhat.com/errata/RHSA-2022:1988
- https://bugzilla.redhat.com/show_bug.cgi?id=1999675
- https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html
- https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive@gmail.com/
- https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive%40gmail.com/