CVE-2021-38561: Out-of-bounds Read

December 26, 2022 (updated January 9, 2023)

golang.org/x/text/language in golang.org/x/text before 0.3.7 can panic with an out-of-bounds read during BCP 47 language tag parsing. Index calculation is mishandled. If parsing untrusted user input, this can be used as a vector for a denial-of-service attack.

References

deps.dev/advisory/OSV/GO-2021-0113
github.com/advisories/GHSA-ppp9-7jff-5vj2
go.googlesource.com/text/+/383b2e75a7a4198c42f8f87833eefb772868a56f
groups.google.com/g/golang-announce
nvd.nist.gov/vuln/detail/CVE-2021-38561
pkg.go.dev/golang.org/x/text/language

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