PT-2019-1112 · Linux+4 · Linux Kernel+4
Published
2019-12-13
·
Updated
2023-11-09
·
CVE-2019-20636
CVSS v2.0
7.2
High
| Vector | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions:
Linux kernel versions prior to 5.4.12
Description:
The issue is related to an out-of-bounds write in the Linux kernel's input.c component, specifically in the drivers/input/input.c file. This can be exploited to impact the confidentiality, integrity, and availability of protected information. The vulnerability can be triggered by a crafted keycode table, as demonstrated by the input set keycode function. It may lead to local escalation of privilege in the kernel without requiring additional execution privileges. User interaction is not necessary for exploitation.
Recommendations:
For Linux kernel versions prior to 5.4.12, update to version 5.4.12 or later to resolve the issue. As a temporary workaround, consider restricting access to the input.c component until a patch is available. Avoid using the
input set keycode function in the affected API endpoint until the issue is resolved.Fix
Memory Corruption
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Centos
Linux Kernel
Red Hat