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s390x: Fix memory leak in s390x_HMAC_CTX_copy()

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When s390x_HMAC_CTX_copy() is called, but the destination context already
has a buffer allocated, it is not freed before duplicating the buffer from
the source context.

Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>

Reviewed-by: Paul Dale <ppzgs1@gmail.com>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/25238)
This commit is contained in:
Ingo Franzki 2024-08-20 11:35:20 +02:00 committed by Tomas Mraz
parent fe1ce91f7f
commit 19b87d2d2b
1 changed files with 1 additions and 0 deletions
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crypto/hmac/hmac_s390x.c
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@ -263,6 +263,7 @@ int s390x_HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx)
memcpy(&dctx->plat.s390x.param, &sctx->plat.s390x.param,
sizeof(dctx->plat.s390x.param));
OPENSSL_clear_free(dctx->plat.s390x.buf, dctx->plat.s390x.size);
dctx->plat.s390x.buf = NULL;
if (sctx->plat.s390x.buf != NULL) {
dctx->plat.s390x.buf = OPENSSL_memdup(sctx->plat.s390x.buf,