A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25656
Reference (s):
- https://bugzilla.redhat.com/show_bug.cgi?id=1888726
- URL: https://bugzilla.redhat.com/show_bug.cgi?id=1888726
- https://lkml.org/lkml/2020/10/16/84
- URL: https://lkml.org/lkml/2020/10/16/84
- https://lkml.org/lkml/2020/10/29/528