Input validation error in Linux kernel - CVE-2018-15572

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Main Vulnerability Database Vulnerabilities #VU94155

Input validation error in Linux kernel - CVE-2018-15572

Published: August 20, 2018 / Updated: October 3, 2019


Vulnerability identifier: #VU94155
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-15572
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to improper input validation within the spectre_v2_parse_cmdline() and pr_info() functions in arch/x86/kernel/cpu/bugs.c. A local user can gain access to sensitive information.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-kvm (Ubuntu package)
linux-aws (Ubuntu package)
linux-snapdragon (Ubuntu package)
linux-oem (Ubuntu package)
linux-gcp (Ubuntu package)

How to mitigate CVE-2018-15572

Install update from vendor's website.

linux (Ubuntu package) - addressed in versions 3.13.0-160.210, 4.4.0-137.163, 4.15.0-36.39
linux-kvm (Ubuntu package) - addressed in versions 4.4.0-1035.41, 4.15.0-1023.23
linux-aws (Ubuntu package) - addressed in versions 4.4.0-1069.79, 4.15.0-1023.23
linux-snapdragon (Ubuntu package) - update to 4.4.0-1102.107
linux-oem (Ubuntu package) - update to 4.15.0-1021.24
linux-gcp (Ubuntu package) - update to 4.15.0-1021.22

External References

Related Security Bulletins