SB2016112807 - NULL pointer dereference in Linux kernel keys
Published: November 28, 2016
Security Bulletin ID
SB2016112807
CSH 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 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2016-9313)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local non-authenticated attacker to execute arbitrary code.
The vulnerability exists due to NULL pointer dereference within the big_key_init() function in security/keys/big_key.c. A local non-authenticated attacker can execute arbitrary code.
Remediation
Install update from vendor's website.
References
- http://www.openwall.com/lists/oss-security/2016/07/22/1
- https://github.com/torvalds/linux/commit/7df3e59c3d1df4f87fe874c7956ef7a3d2f4d5fb
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7df3e59c3d1df4f87fe874c7956ef7a3d2f4d5fb
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7
- http://www.securityfocus.com/bid/94546