Use After Free Affecting kernel-bootwrapper package, versions <0:3.10.0-1160.36.2.el7
Threat Intelligence
EPSS
0.04% (14th
percentile)
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Test your applications- Snyk ID SNYK-CENTOS7-KERNELBOOTWRAPPER-2184964
- published 26 Jul 2021
- disclosed 16 Jul 2020
Introduced: 16 Jul 2020
CVE-2019-20934 Open this link in a new tabHow to fix?
Upgrade Centos:7 kernel-bootwrapper to version 0:3.10.0-1160.36.2.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
An issue was discovered in the Linux kernel before 5.2.6. On NUMA systems, the Linux fair scheduler has a use-after-free in show_numa_stats() because NUMA fault statistics are inappropriately freed, aka CID-16d51a590a8c.
References
- https://access.redhat.com/security/cve/CVE-2019-20934
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1913
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.6
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16d51a590a8ce3befb1308e0e7ab77f3b661af33
- https://access.redhat.com/errata/RHSA-2021:2725
CVSS Scores
version 3.1