A flaw was found in the Linux kernel in versions before 5.9-rc6. When changing screen size, an out-of-bounds memory write can occur leading to memory corruption or a denial of service. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14390
Reference (s):
- https://bugzilla.redhat.com/show_bug.cgi?id=1876788
- URL: https://bugzilla.redhat.com/show_bug.cgi?id=1876788
- MLIST:[debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update
- URL: https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
- MLIST:[debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update