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Building a malicious package containing "//go:cgo" compiler directives could inject arbitrary flags into the external linker invocation on…

CVE-2026-97041

Building a malicious package containing "//go:cgo" compiler directives could inject arbitrary flags into the external linker invocation on ELF platforms. The compiler and linker did not reject commas in "//go:cgoimportdynamic", "//go:cgoexportdynamic", "//go:cgoexportstatic", "//go:cgoimportstatic", and "//go:cgodynamiclinker" directives, and the linker passed the dynamic linker path using "-Wl,--dynamic-linker, ". Furthermore, the two-argument form of "//go:cgoimportdynamic" (which is permitted in non-cgo Go source files) could overwrite the external symbol name of a symbol already marked for cgo export. A symbol name or dynamic linker path containing a comma or leading "@" could split "-Wl,--export-dynamic-symbol=" or "-Wl,--dynamic-linker," into arbitrary host linker flags or response file arguments. The compiler and linker now reject commas in "//go:cgo" symbol and dynamic linker directives, the linker passes "-Wl,--dynamic-linker= ", and "cgoimportdynamic" no longer overwrites symbols exported via "cgoexportdynamic" or "cgoexportstatic".

Assessment

CVSS
Not yet scored
Severity
Unscored
Known exploited
Not listed in CISA KEV
Exploit availability
Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published
11 November 2026
Last updated
11 November 2026
Assigner
Go

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