Building a malicious file with cmd/go can cause can cause a write to an attacker-controlled file with partial control of the file content. The "#cgo pkg-config:" directive in a Go source file provides command-line arguments to provide to the Go pkg-config command. An attacker can provide a "--log-file" argument to this directive, causing pkg-config to write to an attacker-controlled location.
https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-61731.json
https://pkg.go.dev/vuln/GO-2026-4339
https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc
https://bugzilla.redhat.com/show_bug.cgi?id=2434433
https://access.redhat.com/security/cve/CVE-2025-61731
https://access.redhat.com/errata/RHSA-2026:7883
https://access.redhat.com/errata/RHSA-2026:7879
https://access.redhat.com/errata/RHSA-2026:7878
https://access.redhat.com/errata/RHSA-2026:7877
https://access.redhat.com/errata/RHSA-2026:7876
https://access.redhat.com/errata/RHSA-2026:7834
https://access.redhat.com/errata/RHSA-2026:7833
https://access.redhat.com/errata/RHSA-2026:7385
https://access.redhat.com/errata/RHSA-2026:7291
https://access.redhat.com/errata/RHSA-2026:6949
https://access.redhat.com/errata/RHSA-2026:5952
https://access.redhat.com/errata/RHSA-2026:5950
https://access.redhat.com/errata/RHSA-2026:5948
https://access.redhat.com/errata/RHSA-2026:5944
https://access.redhat.com/errata/RHSA-2026:5943
https://access.redhat.com/errata/RHSA-2026:5942
https://access.redhat.com/errata/RHSA-2026:5941
https://access.redhat.com/errata/RHSA-2026:5907
https://access.redhat.com/errata/RHSA-2026:5133
https://access.redhat.com/errata/RHSA-2026:4434
https://access.redhat.com/errata/RHSA-2026:3855
https://access.redhat.com/errata/RHSA-2026:3559
https://access.redhat.com/errata/RHSA-2026:3556
https://access.redhat.com/errata/RHSA-2026:21691
https://access.redhat.com/errata/RHSA-2026:20088
https://access.redhat.com/errata/RHSA-2026:15091
https://access.redhat.com/errata/RHSA-2026:14774
https://access.redhat.com/errata/RHSA-2026:14100
https://access.redhat.com/errata/RHSA-2026:13736