Improper access control in Linux kernel - CVE-2016-3713
Published: June 27, 2016 / Updated: June 27, 2016
Vulnerability identifier: #VU92460
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-3713
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
Ubuntu
linux (Ubuntu package)
How to mitigate CVE-2016-3713
Install update from vendor's repository.
linux (Ubuntu package) - addressed in versions 4.2.0-36.42, 4.4.0-22.40
External 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