commit 9b0e940135d5794dfaf8843e3064a398455d0ef7
author Werner Lewis <werner.lewis@arm.com> Mon Jun 27 12:01:22 2022 +0100
committer Werner Lewis <werner.lewis@arm.com> Mon Jun 27 12:01:22 2022 +0100
tree 97254d63f3b26e564340d4a5eda0758ed878db70
parent fd8cfe4f8ed26f807ca14f026e79bf3a4dcd8d18

Fix case where final special char exceeds buffer

Signed-off-by: Werner Lewis <werner.lewis@arm.com>

library/x509.c

diff --git a/library/x509.c b/library/x509.c
index 4ff4828..55619dc 100644
--- a/library/x509.c
+++ b/library/x509.c
@@ -785,7 +785,7 @@
             if( c && strchr( ",=+<>#;\"\\", c ) )
             {
                 if( j + 1 >= sizeof( s ) - 1 )
-                    continue;
+                    return( MBEDTLS_ERR_X509_BUFFER_TOO_SMALL );
                 s[j++] = '\\';
             }
             if( c < 32 || c >= 127 )