SB2016042716 - Data handling in Linux kernel integrity evm
Published: April 27, 2016
Security Bulletin ID
SB2016042716
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Data handling (CVE-ID: CVE-2016-2085)
CWE-ID: CWE-19 - Data Handling
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to manipulate data.
The vulnerability exists due to data handling error within the evm_verify_hmac() function in security/integrity/evm/evm_main.c. A local user can manipulate data.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=613317bd212c585c20796c10afe5daaa95d4b0a1
- http://www.ubuntu.com/usn/USN-2946-1
- http://www.ubuntu.com/usn/USN-2946-2
- http://www.ubuntu.com/usn/USN-2947-1
- http://www.ubuntu.com/usn/USN-2947-2
- http://www.ubuntu.com/usn/USN-2947-3
- http://www.ubuntu.com/usn/USN-2948-1
- http://www.ubuntu.com/usn/USN-2948-2
- http://www.ubuntu.com/usn/USN-2949-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1324867
- https://github.com/torvalds/linux/commit/613317bd212c585c20796c10afe5daaa95d4b0a1
- https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2085.html
- https://security-tracker.debian.org/tracker/CVE-2016-2085