Description
NewNTUnicodeString does not check for string length overflow. When provided with a string that overflows the maximum size of a NTUnicodeString (a 16-bit number of bytes), it returns a truncated string rather than an error.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| golang.org/x/sys | golang.org/x/sys/windows | < 0.44.0 | 0.44.0 |
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 26.10 | google-guest-agent +1 | No fix yet | — |
| Ubuntu 26.04 LTS | google-guest-agent +1 | No fix yet | — |
| Ubuntu 25.10 | google-guest-agent +1 | No fix yet | — |
| Ubuntu 24.04 LTS | google-guest-agent +1 | No fix yet | — |
| Ubuntu 22.04 LTS | google-guest-agent +1 | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | golang-golang-x-sys | No fix yet | — |
| Ubuntu 18.04 LTS | golang-golang-x-sys | No fix yet | — |
| Ubuntu 16.04 LTS | golang-golang-x-sys | No fix yet | — |
| Ubuntu Pro 20.04 LTS | google-guest-agent | No fix yet | — |
| Ubuntu Pro 18.04 LTS | google-guest-agent | No fix yet | — |
| Ubuntu Pro 16.04 LTS | google-guest-agent | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | keybase-client | 6.6.3-3.1 | openSUSE-SU-2026:11306-1 |
| openSUSE Tumbleweed | rclone | 1.74.2-1.1 | openSUSE-SU-2026:10856-1 |
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
| openSUSE Leap 16.0 | keybase-client | 6.6.3-bp160.2.1 | openSUSE-SU-2026:21492-1 |
| openSUSE Leap 16.0 | rclone | 1.74.4-bp160.1.1 | openSUSE-SU-2026:21436-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | cri-o +6 | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | helm-3 | 3.22.0-r0 | — |
| Wolfi rolling | k3s +2 | 1.36.2.1-r3 | — |
| Wolfi rolling | katib-earlystopping +8 | 0.19.0-r31 | — |
| Wolfi rolling | katib-suggestion-goptuna-compat | 0.19.0-r40 | — |
| Wolfi rolling | kyverno-1.17 +1 | 1.17.2-r35 | — |
| Wolfi rolling | trino | 482-r2 | — |
| Wolfi rolling | trino-plugin-oracle +3 | 483-r7 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | golang.org/x/sys | < 0.44.0 | 0.44.0 | GO-2026-5024 |
Advisories 6
- WID-SEC-2026-1669 Golang Go (sys): Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Nov 10, 2026
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- openSUSE-SU-2026:21492-1 Security update for keybase-client SUSE / openSUSE Security Updates · Jul 31, 2026
- openSUSE-SU-2026:21436-1 Security update for rclone SUSE / openSUSE Security Updates · Jul 24, 2026
- openSUSE-SU-2026:11306-1 kbfs-6.6.3-3.1 on GA media SUSE / openSUSE Security Updates · Jul 19, 2026
- openSUSE-SU-2026:10856-1 rclone-1.74.2-1.1 on GA media SUSE / openSUSE Security Updates · May 25, 2026