openssl -- multiple vulnerabilities

OpenSSL reports:

• ChaCha20/Poly1305 heap-buffer-overflow (CVE-2016-7054)
  Severity: High
  TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to a DoS attack by corrupting larger payloads. This can result in an OpenSSL crash. This issue is not considered to be exploitable beyond a DoS.
• CMS Null dereference (CVE-2016-7053)
  Severity: Medium
  Applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected.
• Montgomery multiplication may produce incorrect results (CVE-2016-7055)i
  Severity: Low
  There is a carry propagating bug in the Broadwell-specific Montgomery multiplication procedure that handles input lengths divisible by, but longer than 256 bits.

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