diff --git a/ChangeLog.d/ecp-bignum-error-checks.txt b/ChangeLog.d/ecp-bignum-error-checks.txt
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+Bugfix
+   * Fix a memory leak in mbedtls_mpi_sub_abs() when the result was negative
+     (an error condition) and the second operand was aliased to the result.
+   * Fix a case in elliptic curve arithmetic where an out-of-memory condition
+     could go undetected, resulting in an incorrect result.