Out-of-bounds Read Affecting kernel package, versions <0:4.14.209-160.335.amzn2
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Test your applications- Snyk ID SNYK-AMZN2-KERNEL-1691893
- published 27 Sep 2021
- disclosed 20 Nov 2020
Introduced: 20 Nov 2020
CVE-2020-28974 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel 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 package and not the kernel package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height.
References
- https://security.netapp.com/advisory/ntap-20210108-0003/
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28974
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804
- https://seclists.org/oss-sec/2020/q4/104
- 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/2020/11/25/1