Soon, in fedora SSSD will be installing a binary /usr/libexec/sssd/passkey_child. This needs to have the same SELinux context type as /usr/libexec/sssd/oidc_child, specifically it needs the 'ipa_otpd_exec_t' type.
Currently this is in active development but we are targeting Fedora 39 for the introduction of the sssd-passkey package.
ls -Z /usr/libexec/sssd/passkey_child
system_u:object_r:bin_t:s0 /usr/libexec/sssd/passkey_child
ls -Z /usr/libexec/sssd/oidc_child
system_u:object_r:ipa_otpd_exec_t:s0 /usr/libexec/sssd/oidc_child