ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Sun Sep 10 02:37:47 2023 +0200| [ca09d8a0dcd82e3128e62463231296aaf63ae6f7] | committer: Michael Niedermayer
avcodec/jpegxl_parser: Check for ctx->skip overflow Fixes: out of array access Fixes: 62113/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5025082076168192 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ca09d8a0dcd82e3128e62463231296aaf63ae6f7 --- libavcodec/jpegxl_parser.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/jpegxl_parser.c b/libavcodec/jpegxl_parser.c index 4010bc713a..6656ed35c5 100644 --- a/libavcodec/jpegxl_parser.c +++ b/libavcodec/jpegxl_parser.c @@ -1326,7 +1326,7 @@ static int skip_boxes(JXLParseContext *ctx, const uint8_t *buf, int buf_size) if (!size) return AVERROR_INVALIDDATA; /* invalid ISOBMFF size */ - if (size <= head_size + 4) + if (size <= head_size + 4 || size > INT_MAX - ctx->skip) return AVERROR_INVALIDDATA; ctx->skip += size; _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
