Race condition in Linux kernel - CVE-2016-6516
Published: August 6, 2016 / Updated: November 28, 2016
Vulnerability identifier: #VU91493
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2016-6516
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2016-6516
Install update from vendor's website.
Sources
- 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