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Add overflow check for preserved local offset in preserve_referenced_local (#4211)

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liang.he
2025-05-07 09:45:49 +08:00
committed by GitHub
parent bb36a43fa4
commit ea417d7619
2 changed files with 14 additions and 0 deletions
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5
core/iwasm/interpreter/wasm_mini_loader.c
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@ -4778,6 +4778,11 @@ preserve_referenced_local(WASMLoaderContext *loader_ctx, uint8 opcode,
loader_ctx->preserved_local_offset += 2;
emit_label(EXT_OP_COPY_STACK_TOP_I64);
}
/* overflow */
bh_assert(preserved_offset
<= loader_ctx->preserved_local_offset);
emit_operand(loader_ctx, local_index);
emit_operand(loader_ctx, preserved_offset);
emit_label(opcode);