SB2019112814 - Information disclosure in Linux kernel on powerpc
Published: November 28, 2019 Updated: November 28, 2019
Security Bulletin ID
SB2019112814
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2019-18660)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to absent protection in Linux kernel on powerpc against the Spectre-RSB, related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c. A local user can gain unauthorized access to sensitive information on the system.
Remediation
Install update from vendor's website.
References
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.204
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.204
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.87
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.157
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.1
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.14
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5