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Go Compiler Can Cause Program Crashes with Invalid Memory Access
GO-2026-4868
CVE-2026-27143
Summary
If you use the Go compiler, it may not check some calculations correctly, leading to a program crash or data loss. This affects any Go application that uses the compiler. Update to the latest Go version to fix this.
What to do
- Update toolchain to version 1.26.2.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| – | toolchain | > 1.26.0-0 , <= 1.26.2 | 1.26.2 |
Original title
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 leadin...
Original description
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.
Published: 8 Apr 2026 · Updated: 9 Apr 2026 · First seen: 8 Apr 2026