CVE-2026-33811: Go Defer Free Reassigned Pointer
Passing a pointer variable directly to a deferred free/deallocation call evaluates the argument at defer registration time. If the variable is reassigned or reallocated later, the deferred call will free the stale pointer, potentially causing a double-free (CWE-415). Wrap the deallocation in a closure: defer func() { C.free(unsafe.Pointer(buf)) }().
Gogreprules fetch cve-2026-33811-go-defer-free-reassigned-pointer --engine opengrepDescription
Passing a pointer variable directly to a deferred free/deallocation call evaluates the argument at defer registration time. If the variable is reassigned or reallocated later, the deferred call will free the stale pointer, potentially causing a double-free (CWE-415). Wrap the deallocation in a closure: defer func() { C.free(unsafe.Pointer(buf)) }().
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