GO-2026-4867

    Dashboard / Vulnerabilities / GO-2026-4867

    GO-2026-4867

    Published: 7 Apr 2026Last Modified: 30 Jul 2026

    Summary: Miscompilation allows memory corruption via CONVNOP-wrapped array copy in cmd/compile

    Details: The compiler is meant to unwrap pointers which are the operands of a memory move; a no-op interface conversion prevented the compiler from making the correct determination about non-overlapping moves, potentially leading to memory corruption at runtime.

    References: https://go.dev/cl/763764, https://go.dev/issue/78371, https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU

    Affected packages

    Package

    Name: toolchain

    Purl: pkg:golang/toolchain

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.25.9

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High