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-rw-r--r--libavformat/avidec.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/libavformat/avidec.c b/libavformat/avidec.c
index 39039f5bc9..2e261c94e6 100644
--- a/libavformat/avidec.c
+++ b/libavformat/avidec.c
@@ -362,7 +362,8 @@ static void avi_read_nikon(AVFormatContext *s, uint64_t end)
uint16_t size = avio_rl16(s->pb);
const char *name = NULL;
char buffer[64] = { 0 };
- size = FFMIN(size, tag_end - avio_tell(s->pb));
+ uint64_t remaining = tag_end - avio_tell(s->pb);
+ size = FFMIN(size, remaining);
size -= avio_read(s->pb, buffer,
FFMIN(size, sizeof(buffer) - 1));
switch (tag) {