CVE-2016-2085
The evm_verify_hmac function in security/integrity/evm/evm_main.c in the Linux kernel before 4.5 does not properly copy data, which makes it easier for local users to forge MAC values via a timing
02 Description
The evm_verify_hmac function in security/integrity/evm/evm_main.c in the Linux kernel before 4.5 does not properly copy data, which makes it easier for local users to forge MAC values via a timing
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.46% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 39.6% of scored records. A rank, not a probability.
- NVD base score
- 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-04-27 17:00Z10 YR AGO
- Last updated
- 2024-08-05 23:17Z2 YR AGO
- Reserved
- 2016-01-27
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- f569292d62c161d3d44aba2ffa5bece34b1417024507ab5d876cf2f4bbfec512
05 Affected products
06 References
- www.ubuntu.comUSN-2949-1http://www.ubuntu.com/usn/USN-2949-1
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1324867
- security-tracker.debian.orghttps://security-tracker.debian.org/tracker/CVE-2016-2085
- git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=613317bd212c585c20796c10afe5daaa95d4b0a1
- www.ubuntu.comUSN-2947-3http://www.ubuntu.com/usn/USN-2947-3
- www.ubuntu.comUSN-2947-2http://www.ubuntu.com/usn/USN-2947-2
- people.canonical.comhttps://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2085.html
- www.ubuntu.comUSN-2947-1http://www.ubuntu.com/usn/USN-2947-1
- www.ubuntu.comUSN-2946-2http://www.ubuntu.com/usn/USN-2946-2
- github.comhttps://github.com/torvalds/linux/commit/613317bd212c585c20796c10afe5daaa95d4b0a1
- www.ubuntu.comUSN-2948-1http://www.ubuntu.com/usn/USN-2948-1
- www.ubuntu.comUSN-2946-1http://www.ubuntu.com/usn/USN-2946-1
- www.ubuntu.comUSN-2948-2http://www.ubuntu.com/usn/USN-2948-2
07 Fixed in
Debian 12
- linux Fixed in 4.4.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 4.4.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 4.4.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- linux Fixed in 3.13.0-85.129
- linux-lts-utopic Fixed in 3.16.0-69.89~14.04.1
- linux-lts-vivid Fixed in 3.19.0-58.64~14.04.1
- linux-lts-wily Fixed in 4.2.0-35.40~14.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.