Fix memory leak in openssl fips modes #7064
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Good catch. Thanks! |
ethomson
approved these changes
Jun 5, 2025
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Version 1.9.0 introduced a memory leak when using the new FIPS-compliant mode (-DUSE_SHA256=OpenSSL-FIPS).
The culprit turned out to be the
ctx->c = NULL;line added togit_hash_sha256_finalfunction, which too hastily cleans up a pointer. Because of that, the cleanup function call to EVP_MD_CTX_free(nullptr) doesn't have any effect and the memory is never freed.The same applies to SHA1 fips mode.