What’s Vulnerable › Vulnerabilities

CVE-2026-64076: netfilter: bridge: eb_tables: close module init race

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-19 · updated 2026-10-30
• Weakness: CWE-362

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.

Affected products

• Linux kernel: from 5.13 before 6.18.34; from 6.19 before 7.0.11; 7.1-rc1, 7.1-rc2, 7.1-rc3 — fixed in 6.18.34, 7.0.11
• Linux: 5.13 — fixed in 7.1

How to fix

Upgrade to a fixed version: Linux kernel 6.18.34, 7.0.11; Linux 7.1. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/02d999dc69b3918dba2414932b5d95f1f75c76cb
• https://git.kernel.org/stable/c/27414ff1b287ea9a2a11675149ec28e05539f3cc
• https://git.kernel.org/stable/c/5fc488f46086d17e8e545d8104ddd95b175de218
• https://git.kernel.org/stable/c/6bb35bdaabb22fd2d86b601904e928dbaa537941
• https://git.kernel.org/stable/c/c647e2a21bbbaceda6cdb8a44a56f44d231dc4b4
• https://git.kernel.org/stable/c/e0e7dec9dfc02987598e6a42bdfcab51dcc43e10

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