[FFmpeg-devel] [PATCH v1] avformat/imf: fix error CPL root element is absent

[pal at sandflow.com]

From: Pierre-Anthony Lemieux <pal at palemieux.com>

Signed-off-by: Pierre-Anthony Lemieux <pal at palemieux.com>
---

Notes:
    Found through manual fuzzing.

 libavformat/imf_cpl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/imf_cpl.c b/libavformat/imf_cpl.c
index 7055b49ae8..167244a5a2 100644
--- a/libavformat/imf_cpl.c
+++ b/libavformat/imf_cpl.c
@@ -688,7 +688,7 @@ int ff_imf_parse_cpl_from_xml_dom(xmlDocPtr doc, FFIMFCPL **cpl)
     }
 
     cpl_element = xmlDocGetRootElement(doc);
-    if (xmlStrcmp(cpl_element->name, "CompositionPlaylist")) {
+    if ((!cpl_element) || xmlStrcmp(cpl_element->name, "CompositionPlaylist")) {
         av_log(NULL, AV_LOG_ERROR, "The root element of the CPL is not CompositionPlaylist\n");
         ret = AVERROR_INVALIDDATA;
         goto cleanup;
-- 
2.17.1