virtio_net: Fix resize of the RX ring
CVE-2026-90142 · published 17 Sept 2026
How serious is it
- Severity: high, CVSS score 7.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-90142?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: e9f3962441c0a4d6f16c656e6c8aa02a3ccdd568 to < 5c941b5d989a15cdaa987a2c602fb168461c6186, e9f3962441c0a4d6f16c656e6c8aa02a3ccdd568 to < 5235abdb760bbd7a6fcecf1890b5160b7a75a9ce, e9f3962441c0a4d6f16c656e6c8aa02a3ccdd568 to < 8344c9233c8f77017174d9e280c5a26034d068b6, e9f3962441c0a4d6f16c656e6c8aa02a3ccdd568 to < d09c98a6da215bce2173a292e4b95c8de6ea5d51
- Linux Linux: 6.11
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
In the Linux kernel, the following vulnerability has been resolved:
virtio_net: Fix resize of the RX ring
When a AF_XDP socket is attached, the virtnet_rx_resize
should resize the rq->xsk_buffs XSK buffer array. Otherwise,
when the size grows, the virtnet_rx_resume() causes a write
past the end of the array. This is easily reproducable with
ethtool -G ens3 rx 32
./xdpsock -i eth0 -q 0 -r -z &
ethtool -G eth0 rx 256
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/5c941b5d989a15cdaa987a2c602fb168461c6186
- git.kernel.org/stable/c/5235abdb760bbd7a6fcecf1890b5160b7a75a9ce
- git.kernel.org/stable/c/8344c9233c8f77017174d9e280c5a26034d068b6
- git.kernel.org/stable/c/d09c98a6da215bce2173a292e4b95c8de6ea5d51
Merged from CVE List. Last updated 26 Oct 2026. All vulnerabilities · RSS · JSON