--- title: "CVE-2016-2556\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2016-2556?format=md keywords: index, follow --- # CVE-2016-2556 Publication date 12 April 2016 Last updated 25 August 2025 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **7.8 · High** [Score breakdown](https://ubuntu.com/security/CVE-2016-2556?format=md#impact-score) Toggle side navigation ## Description The Escape interface in the Kernel Mode Driver layer in the NVIDIA GPU graphics driver R340 before 341.95 and R352 before 354.74 on Windows improperly allows access to restricted functionality, which allows local users to gain privileges via unspecified vectors. [Read the notes from the security team](https://ubuntu.com/security/CVE-2016-2556?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | nvidia-graphics-drivers | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-173 | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-173-updates | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-304 | 15.10 wily | Not affected | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-304-updates | 15.10 wily | Not affected | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-310-updates | 15.10 wily | Not affected | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not in release | | nvidia-graphics-drivers-319 | 15.10 wily | Not affected | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-319-updates | 15.10 wily | Not affected | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-331 | 15.10 wily | Not affected | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-331-updates | 15.10 wily | Not affected | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-340 | 15.10 wily | Not affected | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-340-updates | 15.10 wily | Not affected | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-346 | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not in release | | nvidia-graphics-drivers-346-updates | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not in release | | nvidia-graphics-drivers-352 | 15.10 wily | Not affected | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not in release | | nvidia-graphics-drivers-352-updates | 15.10 wily | Not affected | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not in release | | nvidia-graphics-drivers-361 | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not in release | | nvidia-graphics-drivers-361-updates | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not in release | | nvidia-graphics-drivers-96 | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-96-updates | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-experimental-304 | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-experimental-310 | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-tegra | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | | nvidia-graphics-drivers-updates | 15.10 wily | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not affected | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ## Notes --- ### [tyhicks](https://launchpad.net/~tyhicks) Only affects Windows ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 7.8 · High * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Local | | Attack complexity | Low | | Privileges required | Low | | User interaction | None | | Scope | Unchanged | | Confidentiality impact | High | | Integrity impact | High | | Availability impact | High | * Scores | Parameter | Value | | --- | --- | | Base score | 7.8 · High | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2556) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-2556) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-2556) * [Debian](https://security-tracker.debian.org/tracker/CVE-2016-2556) ### Other references * * *