_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later.Referenceshttps://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=512c0c75276949f13b6373b5c04f7065af750b08https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.htmlhttps://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.htmlhttps://gnupg.orghttps://bugs.gentoo.org/show_bug.cgi?id=767814https://www.oracle.com//security-alerts/cpujul2021.html
