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From: Patrick Griffis <pgriffis@igalia.com>
Date: Wed, 8 Jan 2025 16:30:17 -0600
Subject: content-sniffer: Handle sniffing resource shorter than 4 bytes
(cherry picked from commit ba4c3a6f988beff59e45801ab36067293d24ce92)
---
libsoup/soup-content-sniffer.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/libsoup/soup-content-sniffer.c b/libsoup/soup-content-sniffer.c
index 3fb29ad..4e3a5b3 100644
--- a/libsoup/soup-content-sniffer.c
+++ b/libsoup/soup-content-sniffer.c
@@ -227,9 +227,14 @@ sniff_mp4 (SoupContentSniffer *sniffer, SoupBuffer *buffer)
{
const char *resource = (const char *)buffer->data;
guint resource_length = MIN (512, buffer->length);
- guint32 box_size = *((guint32*)resource);
+ guint32 box_size;
guint i;
+ if (resource_length < sizeof (guint32))
+ return FALSE;
+
+ box_size = *((guint32*)resource);
+
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
box_size = ((box_size >> 24) |
((box_size << 8) & 0x00FF0000) |
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