From 71edf749e1e88f47cbfc6467dbc19a2a8199ee12 Mon Sep 17 00:00:00 2001
From: Gilles Peskine <Gilles.Peskine@arm.com>
Date: Tue, 9 Feb 2021 18:50:03 +0100
Subject: [PATCH] Changelog entry for DRBG mutex usage fix

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
---
 ChangeLog.d/drbg-mutex.txt | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 ChangeLog.d/drbg-mutex.txt

diff --git a/ChangeLog.d/drbg-mutex.txt b/ChangeLog.d/drbg-mutex.txt
new file mode 100644
index 000000000..3ac5abfa8
--- /dev/null
+++ b/ChangeLog.d/drbg-mutex.txt
@@ -0,0 +1,5 @@
+Bugfix
+   * Fix a resource leak in CTR_DRBG and HMAC_DRBG when MBEDTLS_THREADING_C
+     is enabled, on platforms where initializing a mutex allocates resources.
+     This was a regression introduced in the previous release. Reported in
+     #4017, #4045 and #4071.