Google cmd/go up to 1.26.10/1.27.3 Compiler Driver ld.bfd code injection

Summaryinfo

A vulnerability was found in Google cmd and go up to 1.26.10/1.27.3. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the file ld.bfd of the component Compiler Driver. This manipulation causes code injection. The identification of this vulnerability is CVE-2026-97037. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Google cmd and go up to 1.26.10/1.27.3. It has been declared as critical. Affected by this vulnerability is an unknown function of the file ld.bfd of the component Compiler Driver. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Building a malicious package that uses cgo could cause arbitrary code execution at link time by passing linker script files to the host linker via "#cgo LDFLAGS". Split "-Wl," flags that consume a following argument (such as "-Wl,-rpath", "-Wl,--just-symbols", and "-Wl,-undefined") previously accepted a bare second argument without a "-Wl," prefix, which the compiler driver passes directly to the linker as a positional input file. Additionally, when using GNU ld.bfd, flags such as "-framework", "-Wl,-framework", "-Wl,-undefined", "-Wl,--just-symbols", "-Wl,-R", "-Wl,-subsystem", and (on non-Darwin platforms) "-Wl,-sectcreate" could cause ld.bfd to interpret their arguments as linker scripts if they named a regular file on disk. The go command now requires a "-Wl," prefix on the second token of split "-Wl," flags (except "-Wl,-R"), verifies that these flags do not reference linker script files, and disallows bare "-Wl,--warn-backrefs-exclude".

This vulnerability is known as CVE-2026-97037 since 09/24/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/11/2026). MITRE ATT&CK project uses the attack technique T1059 for this issue.

Upgrading to version 1.26.11 or 1.27.4 eliminates this vulnerability.

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Productinfo

Type

• Programming Language Software

Vendor

• Google

Name

• cmd
• go

Version

• 1.26.0
• 1.26.1
• 1.26.2
• 1.26.3
• 1.26.4
• 1.26.5
• 1.26.6
• 1.26.7
• 1.26.8
• 1.26.9
• 1.26.10
• 1.27.0
• 1.27.1
• 1.27.2
• 1.27.3

License

• free

Website

• Vendor: https://www.google.com/

CPE 2.3info

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CPE 2.2info

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