commit ce726b23fa70816f77832cdc1883b3796efe0687
author Gilles Peskine <Gilles.Peskine@arm.com> Thu Mar 06 19:27:50 2025 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> Thu Mar 06 19:27:50 2025 +0100
tree b1cb6cb969cef9840aeded37856afc9bfde37d5c
parent 184cac1eb68a728848c96d36f1fda29f26c7aa1a

Fix uninitialized variable

The of m_bytes value isn't actually used when it's uninitialized,
because *data is null, but that's very fragile.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>

library/psa_crypto.c

diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index d959587..4ccb75b 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -6316,7 +6316,7 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     size_t m;
-    size_t m_bytes;
+    size_t m_bytes = 0;
 
     mbedtls_mpi_init(&k);
     mbedtls_mpi_init(&diff_N_2);