Go cmd/compile 1.25.9/1.26.2 Induction Variable Underflow Vulnerability
CVE-2026-27143 Published on April 8, 2026
Missing bound checks can lead to memory corruption in safe Go in cmd/compile
Arithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.
Products Associated with CVE-2026-27143
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Affected Versions
Go toolchain cmd/compile:- Before 1.25.9 is affected.
- Version 1.26.0-0 and below 1.26.2 is affected.