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GO-2026-5024

Invoking integer overflow in NewNTUnicodeString in golang.org/x/sys/windows

Quick fix

GO-2026-5024 — golang.org/x/sys: upgrade to the fixed version with the command below.

go get golang.org/x/sys@v0.44.0

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

Go/golang.org/x/sys

Introduced in: 0Fixed in: 0.44.0

Fixgo get golang.org/x/sys@v0.44.0

References

https://go.dev/issue/78916[REPORT]
https://go.dev/cl/770080[FIX]
https://groups.google.com/g/golang-announce/c/6MMI8Lj-Atg[WEB]