--- title: "CVE-2011-4915\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-2011-4915?format=md keywords: index, follow --- # CVE-2011-4915 Publication date 20 February 2020 Last updated 25 August 2025 --- Ubuntu priority **Low** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **5.5 · Medium** [Score breakdown](https://ubuntu.com/security/CVE-2011-4915?format=md#impact-score) Toggle side navigation ## Description fs/proc/base.c in the Linux kernel through 3.1 allows local users to obtain sensitive keystroke information via access to /proc/interrupts. [Read the notes from the security team](https://ubuntu.com/security/CVE-2011-4915?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | linux | 14.04 LTS trusty | Ignored upstream determined we have sufficient facilities already | | 13.10 saucy | Ignored end of life | | 13.04 raring | Ignored end of life | | 12.10 quantal | Ignored end of life | | 12.04 LTS precise | Ignored end of life | | 11.10 oneiric | Ignored end of life | | 11.04 natty | Ignored end of life | | 10.10 maverick | Ignored end of life | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Ignored end of life | | linux-armadaxp | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 13.04 raring | Not in release | | 12.10 quantal | Ignored end of life | | 12.04 LTS precise | Ignored end of life | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | | linux-ec2 | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 13.04 raring | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Ignored end of life | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Not in release | | linux-flo | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-fsl-imx51 | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 13.04 raring | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Not in release | | linux-goldfish | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-grouper | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-lts-backport-maverick | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 13.04 raring | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Not in release | | linux-lts-backport-natty | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 13.04 raring | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Not in release | | linux-lts-backport-oneiric | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 13.04 raring | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Not in release | | linux-lts-quantal | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 13.04 raring | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Ignored end of life | | 11.10 oneiric | Not in release | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | | linux-lts-raring | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 13.04 raring | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Ignored end of life | | 11.10 oneiric | Not in release | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | | linux-lts-saucy | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 13.04 raring | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Ignored end of life | | 10.04 LTS lucid | Not in release | | linux-maguro | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-mako | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-manta | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-mvl-dove | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 13.04 raring | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Ignored end of life | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Not in release | | linux-ti-omap4 | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored end of life | | 13.04 raring | Ignored end of life | | 12.10 quantal | Ignored end of life | | 12.04 LTS precise | Ignored end of life | | 11.10 oneiric | Ignored end of life | | 11.04 natty | Ignored end of life | | 10.10 maverick | Ignored end of life | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | --- * [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 --- ### [apw](https://launchpad.net/~apw) kernel side this is likely fixed by the commits below, we likely either also need a local patch to change defaults or userspace work to ensure appropriate mount options: 0499680a42141d86417a8fbaa8c8db806bea1201 a2ef990ab5a6705a356d146dd773a3b359787497 They also need some chmoding. But basically upstream says that we have what we needed for these. ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 5.5 · Medium * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Local | | Attack complexity | Low | | Privileges required | Low | | User interaction | None | | Scope | Unchanged | | Confidentiality impact | High | | Integrity impact | None | | Availability impact | None | * Scores | Parameter | Value | | --- | --- | | Base score | 5.5 · Medium | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4915) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-4915) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-4915) * [Debian](https://security-tracker.debian.org/tracker/CVE-2011-4915) ### Other references * *