[ruby/openssl] cipher: make output buffer String independent
OpenSSL::Cipher#update accepts a String as the second argument to be
used as the output buffer. The buffer must be directly writable, in
other words, it must not be frozen and not a shared string.
rb_str_resize() does not make the String independent if the String
already has the intended length. Use the rb_str_modify() family instead
to check it.
Added by
[ruby/openssl] cipher: make output buffer String independent
OpenSSL::Cipher#update accepts a String as the second argument to be
used as the output buffer. The buffer must be directly writable, in
other words, it must not be frozen and not a shared string.
rb_str_resize() does not make the String independent if the String
already has the intended length. Use the rb_str_modify() family instead
to check it.
Fixes: https://bugs.ruby-lang.org/issues/20937
https://github.com/ruby/openssl/commit/1de3b80a46