Linux kernel ebtables out-of-bounds write, exploited

high severity · exploited in the wild · published 2026-06-25

An out-of-bounds write in the kernel's ebtables SNAT target can overwrite memory backed by a file page. It is already being exploited in the wild, and some affected kernel lines no longer get fixes.

Fixed in: 7.0.13

CVE: CVE-2026-53266

Source: OSV

Am I affected?

You are affected if the installed version is older than 7.0.13. Check the version you have and update to 7.0.13 or later. The fixed version is verified against a vendor or advisory source.

Get the fix

FixLane has a reviewed fix procedure for this incident: a read-only check first, then the fix. Ask the Telegram bot, or connect an AI agent to the FixLane MCP server and call get_fix_prompt with incident id 1877 and your operating system.