Race Condition Affecting kernel-debuginfo package, versions <0:4.14.209-160.335.amzn2
Threat Intelligence
EPSS
0.05% (23rd
percentile)
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-AMZN2-KERNELDEBUGINFO-1691834
- published 27 Sep 2021
- disclosed 26 May 2021
How to fix?
Upgrade Amazon-Linux:2 kernel-debuginfo to version 0:4.14.209-160.335.amzn2 or higher.
This issue was patched in ALAS2-2020-1566.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo package and not the kernel-debuginfo package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.
References
- https://security.netapp.com/advisory/ntap-20210702-0005/
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25668
- https://bugzilla.redhat.com/show_bug.cgi?id=1893287,
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220
- https://www.openwall.com/lists/oss-security/2020/10/30/1,
- https://www.openwall.com/lists/oss-security/2020/11/04/3,
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
- http://www.openwall.com/lists/oss-security/2020/10/30/1
- http://www.openwall.com/lists/oss-security/2020/11/04/3
- https://bugzilla.redhat.com/show_bug.cgi?id=1893287%2C
- https://www.openwall.com/lists/oss-security/2020/10/30/1%2C
- https://www.openwall.com/lists/oss-security/2020/11/04/3%2C
CVSS Scores
version 3.1