CVE-2023-29404: Fedoraproject Fedora

Critical severity, CVSS 9.8. EPSS: 1.8% chance of exploitation in the next 30 days.

The go command may execute arbitrary code at build time when using cgo. This may occur when running "go get" on a malicious module, or when running any other command which builds untrusted code. This is can by triggered by linker flags, specified via a "#cgo LDFLAGS" directive. The arguments for a number of flags which are non-optional are incorrectly considered optional, allowing disallowed flags to be smuggled through the LDFLAGS sanitization. This affects usage of both the gc and gccgo compilers.

Affected products

• Fedoraproject Fedora: version 38 only
• Golang Go: before 1.19.10 (fixed in 1.19.10); from 1.20.0, before 1.20.5 (fixed in 1.20.5)

Published 2023-06-08. Last modified 2026-06-17.