Vulnerabilities > CVE-2020-28915 - Out-of-bounds Read vulnerability in Linux Kernel
Attack vector
PHYSICAL Attack complexity
LOW Privileges required
HIGH Confidentiality impact
LOW Integrity impact
HIGH Availability impact
HIGH Summary
A buffer over-read (at the framebuffer layer) in the fbcon code in the Linux kernel before 5.8.15 could be used by local attackers to read kernel memory, aka CID-6735b4632def.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Overread Buffers An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.
References
- https://bugzilla.suse.com/show_bug.cgi?id=1178886
- https://bugzilla.suse.com/show_bug.cgi?id=1178886
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.15
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.15
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5af08640795b2b9a940c9266c0260455377ae262
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5af08640795b2b9a940c9266c0260455377ae262
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6735b4632def0640dbdf4eb9f99816aca18c4f16
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6735b4632def0640dbdf4eb9f99816aca18c4f16
- https://syzkaller.appspot.com/bug?id=08b8be45afea11888776f897895aef9ad1c3ecfd
- https://syzkaller.appspot.com/bug?id=08b8be45afea11888776f897895aef9ad1c3ecfd