SB2016080603 - Race condition in Linux kernel fs
Published: August 6, 2016
Security Bulletin ID
SB2016080603
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Race condition (CVE-ID: CVE-2016-6516)
The vulnerability allows a local non-authenticated attacker to execute arbitrary code.
The vulnerability exists due to a race condition within the ioctl_file_dedupe_range() function in fs/ioctl.c. A local non-authenticated attacker can execute arbitrary code.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420a20
- http://www.openwall.com/lists/oss-security/2016/07/31/6
- http://www.securityfocus.com/bid/92259
- https://bugzilla.redhat.com/show_bug.cgi?id=1362457
- https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20