# golang.org/x/arch@v0.13.0 security report (Go) - Verdict: **Needs review** (risk level: medium) - Scanned: 2026-10-05T19:10:46.000Z - Files reviewed: 72 - Findings: 9 low severity findings - Report: https://security.togoder.click/go/golang.org/x/arch - Source: Togoder Security (https://security.togoder.click), AI source-code review ## Summary Togoder Security scanned the Go package golang.org/x/arch@v0.13.0 on Oct 5, 2026. An AI review of 72 source files produced 9 low severity findings. The overall verdict is medium: the findings flag risky but common patterns (dynamic code, unsafe defaults, broad file or network access) rather than confirmed malware. ## Findings ### [low] file system read Finding ID: `NPS-642622E9050E` File: `arm/armspec/spec.go:61` The program opens and reads a PDF file provided as a command-line argument. This is expected behavior for the tool and does not indicate malicious intent. ### [low] file system write Finding ID: `NPS-3EF8EA6E6711` File: `arm/armspec/spec.go:76` The program writes JSON output to standard output. This is expected behavior and not a security concern. ### [low] Potential unintended command execution Finding ID: `NPS-05D3D8ED9B42` File: `ppc64/ppc64spec/spec.go:51` The program reads a PDF file path from os.Args[1] and opens it with pdf.Open. While this is expected behavior for a CLI tool, if the binary is invoked with attacker-controlled arguments, it could lead to processing malicious PDFs, but there is no direct shell execution. ### [low] File system access Finding ID: `NPS-1C4A7E5F8E89` File: `ppc64/ppc64spec/spec.go:51` The program reads a PDF file specified by the user and writes output to stdout. This is within expected functionality and does not manipulate files outside the user-specified input. ### [low] Unused variable Finding ID: `NPS-C8079DF6B591` File: `ppc64/ppc64spec/spec.go:513` The variable `jsFix` is defined but unused, which is harmless but indicates leftover code. No security impact. ### [low] Unused function parameter Finding ID: `NPS-5AD25C2147F6` File: `ppc64/ppc64spec/spec.go:518` The function `printTable` has an unused parameter `table` and an unused import `strconv` via `_ = strconv.Atoi`. This is harmless. ### [low] Build-time execution Finding ID: `NPS-71714A799CE0` File: `ppc64/ppc64util/util.go:7` The file has a '//go:build ignore' directive, so it is not compiled into the package. It is intended to be run manually via 'go run util.go' for generating test cases, not at install or import time. ### [low] Process spawning Finding ID: `NPS-F522AB42F4C8` File: `ppc64/ppc64util/util.go:84` The code uses os/exec to run external tools (gcc, objdump, go run) for code generation. This is expected for a build-time test case generator and is not malicious. ### [low] Spawning processes or shell commands Finding ID: `NPS-3F27369EECA7` File: `s390x/s390xutil/util.go` The code uses os/exec to spawn external processes (gcc, objdump, go run). While this is expected for a test case generator, it's a red flag that should be noted. The commands are invoked with hardcoded or derived arguments, and there is no evidence of command injection, but it's still a security concern. ## Files reviewed - `s390x/s390xutil/util.go` (medium): The code is a legitimate test case generator that spawns gcc, objdump, and go run, with no malicious patterns detected, but process spawning is present. - `arm/armasm/decode.go` (safe): Cleared by Jev triage; no further analysis needed - `arm/armasm/gnu.go` (safe): Cleared by Jev triage; no further analysis needed - `arm/armasm/inst.go` (safe): Cleared by Jev triage; no further analysis needed - `arm/armasm/plan9x.go` (safe): Cleared by Jev triage; no further analysis needed - `arm/armmap/map.go` (safe): Cleared by Jev triage; no further analysis needed - `arm/armspec/spec.go` (safe): No malicious patterns detected; the code is a PDF parsing tool that reads a local file and outputs JSON. - `arm/armspec/specmap.go` (safe): Cleared by Jev triage; no further analysis needed - `arm64/arm64asm/arg.go` (safe): This file only contains constant definitions for ARM64 instruction argument types and extensive documentation comments; no executable code, network access, file system manipulation, or other malicious patterns are present. - `arm64/arm64asm/condition.go` (safe): Cleared by Jev triage; no further analysis needed - `arm64/arm64asm/condition_util.go` (safe): Cleared by Jev triage; no further analysis needed - `arm64/arm64asm/decode.go` (safe): Cleared by Jev triage; no further analysis needed - `arm64/arm64asm/gnu.go` (safe): Cleared by Jev triage; no further analysis needed - `arm64/arm64asm/inst.go` (safe): Cleared by Jev triage; no further analysis needed - `arm64/arm64asm/plan9x.go` (safe): Cleared by Jev triage; no further analysis needed - `arm64/arm64gen/sysreggen.go` (safe): No malicious patterns detected; the code is a legitimate XML parser/generator for ARM64 system register encodings with no network, credential, or dynamic execution activity. - `arm64/arm64spec/spec.go` (safe): No malicious patterns detected - `loong64/loong64asm/arg.go` (safe): Cleared by Jev triage; no further analysis needed - `loong64/loong64asm/decode.go` (safe): Cleared by Jev triage; no further analysis needed - `loong64/loong64asm/gnu.go` (safe): Cleared by Jev triage; no further analysis needed - `loong64/loong64asm/inst.go` (safe): Cleared by Jev triage; no further analysis needed - `loong64/loong64asm/plan9x.go` (safe): Cleared by Jev triage; no further analysis needed - `loong64/loong64asm/tables.go` (safe): Cleared by Jev triage; no further analysis needed - `loong64/loong64spec/spec.go` (safe): No malicious patterns detected; the code is a legitimate build-time tool that parses a PDF specification to generate Go instruction tables. - `ppc64/ppc64asm/decode.go` (safe): Cleared by Jev triage; no further analysis needed - `ppc64/ppc64asm/doc.go` (safe): Cleared by Jev triage; no further analysis needed - `ppc64/ppc64asm/field.go` (safe): Cleared by Jev triage; no further analysis needed - `ppc64/ppc64asm/gnu.go` (safe): Cleared by Jev triage; no further analysis needed - `ppc64/ppc64asm/inst.go` (safe): Cleared by Jev triage; no further analysis needed - `ppc64/ppc64asm/plan9.go` (safe): Cleared by Jev triage; no further analysis needed - `ppc64/ppc64map/map.go` (safe): This is a legitimate Go code generator from the official golang.org/x/arch repository that parses a CSV file and produces opcode tables; no malicious patterns such as data exfiltration, credential harvesting, obfuscation, network access, or process spawning are present. - `ppc64/ppc64spec/spec.go` (safe): The code is a legitimate PDF parsing tool from the Go standard library, with no malicious patterns such as data exfiltration, credential harvesting, or backdoors detected. - `ppc64/ppc64util/util.go` (safe): The file is a legitimate build-time utility for generating ppc64 test cases and contains no malicious patterns. - `riscv64/riscv64asm/arg.go` (safe): Cleared by Jev triage; no further analysis needed - `riscv64/riscv64asm/csr_string.go` (safe): No malicious patterns detected; this is a standard auto-generated stringer file for RISC-V CSR constants with no I/O, network, process, or dynamic execution capabilities. - `riscv64/riscv64asm/decode.go` (safe): Cleared by Jev triage; no further analysis needed - `riscv64/riscv64asm/gnu.go` (safe): Cleared by Jev triage; no further analysis needed - `riscv64/riscv64asm/inst.go` (safe): Cleared by Jev triage; no further analysis needed - `riscv64/riscv64asm/plan9x.go` (safe): Cleared by Jev triage; no further analysis needed - `riscv64/riscv64asm/tables.go` (safe): No malicious patterns detected; the file is a generated RISC-V instruction table containing only constant definitions, string mappings, and static struct literals. - `riscv64/riscv64spec/spec.go` (safe): No malicious patterns detected - `s390x/s390xasm/decode.go` (safe): Cleared by Jev triage; no further analysis needed - `s390x/s390xasm/field.go` (safe): Cleared by Jev triage; no further analysis needed - `s390x/s390xasm/gnu.go` (safe): Cleared by Jev triage; no further analysis needed - `s390x/s390xasm/inst.go` (safe): Cleared by Jev triage; no further analysis needed - `s390x/s390xasm/plan9.go` (safe): Cleared by Jev triage; no further analysis needed - `s390x/s390xmap/map.go` (safe): Cleared by Jev triage; no further analysis needed - `s390x/s390xspec/spec.go` (safe): The code is a benign Go utility for parsing PDF documentation to generate instruction encoding CSVs, with no malicious patterns or security concerns. - `x86/x86asm/decode.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86asm/gnu.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86asm/inst.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86asm/intel.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86asm/plan9x.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86avxgen/decode.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86avxgen/generate.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86avxgen/instruction.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86avxgen/main.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86avxgen/print.go` (safe): No malicious patterns detected; this is a standard Go code generator for x86 AVX instruction tables using text/template and go/format without any network, filesystem, or process execution concerns. - `x86/x86csv/reader.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86csv/x86csv.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86map/map.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86spec/cleanup.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86spec/format.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/x86spec/parse.go` (safe): No malicious patterns detected; the code is a benign PDF parser for generating x86 instruction specifications from Intel manual PDFs. - `x86/x86spec/spec.go` (safe): No malicious patterns detected - `x86/xeddata/database.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/xeddata/doc.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/xeddata/object.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/xeddata/operand.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/xeddata/pattern_set.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/xeddata/reader.go` (safe): Cleared by Jev triage; no further analysis needed - `x86/xeddata/xeddata.go` (safe): Cleared by Jev triage; no further analysis needed AI analysis is guidance, not a guarantee. Methodology: https://security.togoder.click/methodology