Bug 2434438 (CVE-2025-68119)

Summary: CVE-2025-68119 cmd/go: cmd/go: Local code execution and arbitrary file write via malicious module version strings
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: cahl, caswilli, crizzo, dfreiber, drow, jburrell, kaycoth, ljawale, luizcosta, msilmser, nweather, rbobbitt, rhel-process-autobot, teagle, vkumar, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Golang's cmd/go module. This vulnerability allows a local attacker to achieve local code execution by downloading and building modules with specially crafted malicious version strings. On systems with Mercurial (hg) installed, this can occur when downloading modules from non-standard sources due to how external Version Control System (VCS) commands are constructed. Additionally, on systems with Git installed, providing malicious version strings to the toolchain can enable an attacker to write to arbitrary files on the filesystem. This issue is triggered by explicitly supplying these malicious version strings.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2436726, 2436727    
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Description OSIDB Bzimport 2026-01-28 20:02:19 UTC 
Downloading and building modules with malicious version strings can cause local code execution. On systems with Mercurial (hg) installed, downloading modules from non-standard sources (e.g., custom domains) can cause unexpected code execution due to how external VCS commands are constructed. This issue can also be triggered by providing a malicious version string to the toolchain. On systems with Git installed, downloading and building modules with malicious version strings can allow an attacker to write to arbitrary files on the filesystem. This can only be triggered by explicitly providing the malicious version strings to the toolchain and does not affect usage of @latest or bare module paths.