What’s Vulnerable › Vulnerabilities

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

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-30

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.

Affected products

• Linux: 3.8 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

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

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