Commit Graph

3 Commits

Author SHA1 Message Date
Petr Gotthard
11efa7d45b BIO_new_from_core_bio: Fix heap-use-after-free after attach
The providers have to call up_ref to keep the cbio pointer, just like
the internal bio_prov.c does.

OSSL_STORE_attach passes a cbio pointer to the provider and then calls
ossl_core_bio_free(cbio). If up_ref is not called, the cbio gets
freed way too early.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15163)
2021-06-25 10:11:29 +10:00
Matt Caswell
a16d21744d Add the ability for ex_data to have a priority
Where an object has multiple ex_data associated with it, then we free that
ex_data in order of priority (high priority first).

Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14991)
2021-05-11 14:56:55 +01:00
Matt Caswell
b0ee1de9ab Create libcrypto support for BIO_new_from_core_bio()
Previously the concept of wrapping an OSSL_CORE_BIO in a real BIO was an
internal only concept for our own providers. Since this is likely to be
generally useful, we make it a part of the public API.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15072)
2021-05-04 12:00:21 +01:00