scheme/webauthn.c in Glewlwyd SSO server through 2.5.3 has a buffer overflow during FIDO2 signature validation in webauthn registration.Referenceshttps://github.com/babelouest/glewlwyd/commit/0efd112bb62f566877750ad62ee828bff579b4e2https://bugs.debian.org/993867
