CVE-2026-64076 netfilter: bridge: eb_tables: close module init race
A race condition in Linux kernel netfilter bridge module initialization allows local attackers to potentially escalate privileges or execute code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-64076?
CVE-2026-64076 is a high-severity vulnerability in Linux kernel, published on 19 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: bridge: eb_tables: close module init race
sashiko reports for unrelated patch: Does the core ebtables initialization in ebtables.c suffer from a similar race? Once nf_register_sockopt() completes, the sockopts are exposed globally.
sockopt has to be registered last, just like in ip/ip6/arptables.
Weakness: CWE-362
Which versions are affected by CVE-2026-64076?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-64076?
Apply the vendor's patch.
Is CVE-2026-64076 being exploited?
There is no known exploitation of CVE-2026-64076 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-92805, BELL-CVE-2026-64076, DEBIAN-CVE-2026-64076, GHSA-w5f5-9vqp-v57f, ROOT-OS-DEBIAN-12-CVE-2026-64076, ROOT-OS-DEBIAN-13-CVE-2026-64076 and 2 more.