SB2016042717 - Input validation error in Linux kernel bpf
Published: April 27, 2016
Security Bulletin ID
SB2016042717
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2016-2383)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper input validation within the adjust_branches() function in kernel/bpf/verifier.c. A local user can gain access to sensitive information.
Remediation
Install update from vendor's website.
References
- http://www.openwall.com/lists/oss-security/2016/02/14/1
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1b14d27ed0965838350f1377ff97c93ee383492
- https://bugzilla.redhat.com/show_bug.cgi?id=1308452
- https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html
- http://www.ubuntu.com/usn/USN-2947-1
- http://www.ubuntu.com/usn/USN-2947-2
- http://www.ubuntu.com/usn/USN-2947-3