CVE-2026-54874: avoid allocating a full read buffer for each buffered DTLS
next-epoch record and lower the unprocessed_rcds queue limit; prevents
excessive memory use from small bogus next-epoch records
CVE-2026-63072: size the CMS key-unwrap output buffer for the worst case
written by AES-WRAP-PAD; prevents an 8-byte out-of-bounds heap write in
cms_kek_cipher (crypto/cms/cms_kari.c)