From 3660229219c12d5a44f8539d25fb5c428480ce3f Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Sun, 26 Mar 2023 14:11:31 +0200
Subject: [PATCH] parser: Fix buffer overread in xmlDetectEBCDIC

Short-lived regression found by OSS-Fuzz.
---
 parserInternals.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/parserInternals.c b/parserInternals.c
index 52491505..8dc6005e 100644
--- a/parserInternals.c
+++ b/parserInternals.c
@@ -1003,11 +1003,12 @@ xmlDetectEBCDIC(xmlParserInputPtr input) {
     handler = xmlGetCharEncodingHandler(XML_CHAR_ENCODING_EBCDIC);
     if (handler == NULL)
         return(NULL);
-    outlen = sizeof(out);
+    outlen = sizeof(out) - 1;
     inlen = input->end - input->cur;
     res = xmlEncInputChunk(handler, out, &outlen, input->cur, &inlen, 0);
     if (res < 0)
         return(handler);
+    out[outlen] = 0;
 
     for (i = 0; i < outlen; i++) {
         if (out[i] == '>')