netfilter: bridge: eb_tables: close module init race
CVE-2026-64076 · published 19 Jul 2026
How serious is it
- Severity: high, CVSS score 7.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-64076?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: 5b53951cfc85329d29df9d07b1e905f4563546a5 to < 5fc488f46086d17e8e545d8104ddd95b175de218, 5b53951cfc85329d29df9d07b1e905f4563546a5 to < 6bb35bdaabb22fd2d86b601904e928dbaa537941, 5b53951cfc85329d29df9d07b1e905f4563546a5 to < c647e2a21bbbaceda6cdb8a44a56f44d231dc4b4, 5b53951cfc85329d29df9d07b1e905f4563546a5 to < 02d999dc69b3918dba2414932b5d95f1f75c76cb
- Linux Linux: 5.13
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
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.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/5fc488f46086d17e8e545d8104ddd95b175de218
- git.kernel.org/stable/c/6bb35bdaabb22fd2d86b601904e928dbaa537941
- git.kernel.org/stable/c/c647e2a21bbbaceda6cdb8a44a56f44d231dc4b4
- git.kernel.org/stable/c/02d999dc69b3918dba2414932b5d95f1f75c76cb
- git.kernel.org/stable/c/27414ff1b287ea9a2a11675149ec28e05539f3cc
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON