forked from jengelh/ffmpeg-4
Jan Engelhardt
01f1756ec6
OBS-URL: https://build.opensuse.org/package/show/multimedia:libs/ffmpeg-4?expand=0&rev=112
33 lines
1.2 KiB
Diff
33 lines
1.2 KiB
Diff
From 1812352d767ccf5431aa440123e2e260a4db2726 Mon Sep 17 00:00:00 2001
|
|
From: Michael Niedermayer <michael@niedermayer.cc>
|
|
Date: Sat, 7 Mar 2020 15:42:58 +0100
|
|
Subject: [PATCH] avcodec/cbs_jpeg: Check length for SOS
|
|
|
|
Fixes: out of array access
|
|
Fixes: 19734/clusterfuzz-testcase-minimized-ffmpeg_BSF_TRACE_HEADERS_fuzzer-5673507031875584
|
|
Fixes: 19353/clusterfuzz-testcase-minimized-ffmpeg_BSF_TRACE_HEADERS_fuzzer-5703944462663680
|
|
|
|
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
|
|
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
|
|
---
|
|
libavcodec/cbs_jpeg.c | 3 +++
|
|
1 file changed, 3 insertions(+)
|
|
|
|
diff --git a/libavcodec/cbs_jpeg.c b/libavcodec/cbs_jpeg.c
|
|
index 6bbce5f89b..89512a26bb 100644
|
|
--- a/libavcodec/cbs_jpeg.c
|
|
+++ b/libavcodec/cbs_jpeg.c
|
|
@@ -197,6 +197,9 @@ static int cbs_jpeg_split_fragment(CodedBitstreamContext *ctx,
|
|
if (marker == JPEG_MARKER_SOS) {
|
|
length = AV_RB16(frag->data + start);
|
|
|
|
+ if (length > end - start)
|
|
+ return AVERROR_INVALIDDATA;
|
|
+
|
|
data_ref = NULL;
|
|
data = av_malloc(end - start +
|
|
AV_INPUT_BUFFER_PADDING_SIZE);
|
|
--
|
|
2.26.2
|
|
|