SB2016062715 - Improper access control in Linux kernel x86 kvm
Published: June 27, 2016
Security Bulletin ID
SB2016062715
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper access control (CVE-ID: CVE-2016-3713)
The vulnerability allows a local user to read data or crash the application.
The vulnerability exists due to improper access control error within the msr_mtrr_valid() function in arch/x86/kvm/mtrr.c. A local user can read data or crash the application.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9842df62004f366b9fed2423e24df10542ee0dc5
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.1
- http://www.openwall.com/lists/oss-security/2016/05/16/2
- https://bugzilla.redhat.com/show_bug.cgi?id=1332139
- https://github.com/torvalds/linux/commit/9842df62004f366b9fed2423e24df10542ee0dc5