---
title: "CVE-2026-90142: Linux Kernel virtio_net - Buffer Overflow"
description: "Linux kernel contains a buffer overflow caused by improper resizing of the RX ring in virtio_net when an AF_XDP socket is attached, letting attackers cause out-of-bounds write, exploit requires AF_XDP socket usage."
url: https://panop.io/threat-heartbeat/CVE-2026-90142/
---

# CVE-2026-90142 Linux Kernel virtio\_net - Buffer Overflow

Linux kernel contains a buffer overflow caused by improper resizing of the RX ring in virtio\_net when an AF\_XDP socket is attached, letting attackers cause out-of-bounds write, exploit requires AF\_XDP socket usage.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.17% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90142)

## Details

Type

Buffer Overflow

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

17 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-90142](https://nvd.nist.gov/vuln/detail/CVE-2026-90142)
- [https://git.kernel.org/stable/c/8344c9233c8f77017174d9e280c5a26034d068b6](https://git.kernel.org/stable/c/8344c9233c8f77017174d9e280c5a26034d068b6)
- [https://git.kernel.org/stable/c/d09c98a6da215bce2173a292e4b95c8de6ea5d51](https://git.kernel.org/stable/c/d09c98a6da215bce2173a292e4b95c8de6ea5d51)
- [https://git.kernel.org/stable/c/5235abdb760bbd7a6fcecf1890b5160b7a75a9ce](https://git.kernel.org/stable/c/5235abdb760bbd7a6fcecf1890b5160b7a75a9ce)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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