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This problem happens usually because an application links libcrypto and/or libssl statically which installs an atexit handler, but later an engine using a shared instance of libcrypto is installed. The problem is in simple words that both instances of libcrypto have an atexit handler installed, but both are unable to coordinate with each other, which causes a crash, typically a use-after-free in the engine's destroy function. Work around that by preventing the engine's libcrypto to install the atexit handler. This may result in a small memory leak, but that memory is still reachable. Fixes #15898 Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/17112) |
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