Description
os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Go standard library | syscall | < 1.23.10, 1.24.0-0 – < 1.24.4 | 1.23.10 |
| Go standard library | os | < 1.23.10, 1.24.0-0 – < 1.24.4 | 1.23.10 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | golang-1.23 +1 | No fix yet | — |
| Ubuntu 25.10 | golang-1.23 +1 | No fix yet | — |
| Ubuntu 24.04 LTS | golang-1.21 +3 | No fix yet | — |
| Ubuntu 22.04 LTS | golang-1.13 +7 | No fix yet | — |
| Ubuntu 20.04 LTS | golang-1.13 +5 | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | golang-1.8 +2 | No fix yet | — |
| Ubuntu 16.04 LTS | golang-1.6 +1 | No fix yet | — |
| Ubuntu 14.04 LTS | golang-1.10 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | golang-1.16 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | golang-1.13 +2 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | golang-1.13 +1 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SLES 15 SP7 | go1.23-openssl | 1.23.12-150600.13.9.1 | SUSE-SU-2025:03159-1 |
| SLES 15 SP7 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SLES 15 SP7 | go1.24-openssl | 1.24.6-150600.13.9.1 | SUSE-SU-2025:03158-1 |
| SLES 15 SP6 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SLES 15 SP6 | go1.23-openssl | 1.23.12-150600.13.9.1 | SUSE-SU-2025:03159-1 |
| SLES 15 SP6 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SLES 15 SP6 | go1.24-openssl | 1.24.6-150600.13.9.1 | SUSE-SU-2025:03158-1 |
| SLES 15 SP5 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SLES 15 SP5 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SLES 15 SP5 | go1.24-openssl | 1.24.4-150000.1.9.1 | SUSE-SU-2025:02120-1 |
| SLES 15 SP4 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SLES 15 SP4 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SLES 15 SP4 | go1.24-openssl | 1.24.4-150000.1.9.1 | SUSE-SU-2025:02120-1 |
| SLES 15 SP3 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SLES 15 SP3 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SLES 15 SP3 | go1.24-openssl | 1.24.4-150000.1.9.1 | SUSE-SU-2025:02120-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SLES for SAP 15 SP5 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SLES for SAP 15 SP5 | go1.24-openssl | 1.24.4-150000.1.9.1 | SUSE-SU-2025:02120-1 |
| SLES for SAP 15 SP4 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SLES for SAP 15 SP4 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SLES for SAP 15 SP4 | go1.24-openssl | 1.24.4-150000.1.9.1 | SUSE-SU-2025:02120-1 |
| SLES for SAP 15 SP3 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SLES for SAP 15 SP3 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SLES for SAP 15 SP3 | go1.24-openssl | 1.24.4-150000.1.9.1 | SUSE-SU-2025:02120-1 |
| SLE HPC 15 SP5 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SLE HPC 15 SP5 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SLE HPC 15 SP5 | go1.24-openssl | 1.24.4-150000.1.9.1 | SUSE-SU-2025:02120-1 |
| SLE HPC 15 SP4 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SLE HPC 15 SP4 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SLE HPC 15 SP4 | go1.24-openssl | 1.24.4-150000.1.9.1 | SUSE-SU-2025:02120-1 |
| SLE HPC 15 SP3 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SLE HPC 15 SP3 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SLE HPC 15 SP3 | go1.24-openssl | 1.24.4-150000.1.9.1 | SUSE-SU-2025:02120-1 |
| SUSE Enterprise Storage 7.1 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| SUSE Enterprise Storage 7.1 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| SUSE Enterprise Storage 7.1 | go1.24-openssl | 1.24.4-150000.1.9.1 | SUSE-SU-2025:02120-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | go1.23 | 1.23.10-1.1 | openSUSE-SU-2025:15223-1 |
| openSUSE Tumbleweed | go1.24 | 1.24.4-1.1 | openSUSE-SU-2025:15224-1 |
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250612T141001-1.1 | openSUSE-SU-2025:15225-1 |
| openSUSE Tumbleweed | kubecolor | 0.5.2-1.1 | openSUSE-SU-2025:15586-1 |
| openSUSE Leap 15.6 | go1.23 | 1.23.10-150000.1.34.1 | SUSE-SU-2025:01848-1 |
| openSUSE Leap 15.6 | go1.23-openssl | 1.23.12-150600.13.9.1 | SUSE-SU-2025:03159-1 |
| openSUSE Leap 15.6 | go1.24 | 1.24.4-150000.1.26.1 | SUSE-SU-2025:01846-1 |
| openSUSE Leap 15.6 | go1.24-openssl | 1.24.6-150600.13.9.1 | SUSE-SU-2025:03158-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | go | 1.24.4-r0 | — |
| Alpine v3.23 | go | 1.24.4-r0 | — |
| Alpine v3.22 | go | 1.24.4-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | golang | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | go-1.20 | 1.20.14-r9 | — |
| Wolfi rolling | go-1.22 | 1.22.12-r8 | — |
| Wolfi rolling | katib-earlystopping +8 | 0.19.0-r31 | — |
| Wolfi rolling | katib-suggestion-goptuna-compat | 0.19.0-r40 | — |
| Wolfi rolling | newrelic-fluent-bit-output | 2.4.0-r5 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | stdlib | < 1.23.10 · >= 1.24.0-0, < 1.24.4 | 1.23.10, 1.24.4 | GO-2025-3750 |
Advisories 10
- WID-SEC-2025-1205 Golang Go: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2026
- openSUSE-SU-2025:15586-1 kubecolor-0.5.2-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15224-1 go1.24-1.24.4-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15225-1 govulncheck-vulndb-0.0.20250612T141001-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15223-1 go1.23-1.23.10-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02120-1 Security update for go1.24-openssl SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:03159-1 Security update for go1.23-openssl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:01846-1 Security update for go1.24 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:01848-1 Security update for go1.23 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:03158-1 Security update for go1.24-openssl SUSE / openSUSE Security Updates · Feb 4, 2026