Fixes: CID1439654 Untrusted pointer read
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavcodec/cbs_jpeg.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavcodec/cbs_jpeg.c b/libavcodec/cbs_jpeg.c
index b1b58dcd65e..406147c082c 100644
--- a/libavcodec/cbs_jpeg.c
+++ b/libavcodec/cbs_jpeg.c
@@ -146,13 +146,13 @@ static int cbs_jpeg_split_fragment(CodedBitstreamContext
*ctx,
}
} else {
i = start;
- if (i + 2 > frag->data_size) {
+ if (i > frag->data_size - 2) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid JPEG image: "
"truncated at %02x marker.\n", marker);
return AVERROR_INVALIDDATA;
}
length = AV_RB16(frag->data + i);
- if (i + length > frag->data_size) {
+ if (length > frag->data_size - i) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid JPEG image: "
"truncated at %02x marker segment.\n", marker);
return AVERROR_INVALIDDATA;
--
2.43.2
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