SB2016111611 - Use-after-free in Linux kernel gadget function driver
Published: November 16, 2016
Security Bulletin ID
SB2016111611
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) Use-after-free (CVE-ID: CVE-2016-7912)
The vulnerability allows a local non-authenticated attacker to execute arbitrary code.
The vulnerability exists due to a use-after-free error within the ffs_user_copy_worker() function in drivers/usb/gadget/function/f_fs.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=38740a5b87d53ceb89eb2c970150f6e94e00373a
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.3
- https://github.com/torvalds/linux/commit/38740a5b87d53ceb89eb2c970150f6e94e00373a
- http://source.android.com/security/bulletin/2016-11-01.html
- http://www.securityfocus.com/bid/94197