From ec28a85107cccece4dce17c0ccb633defe2d6e98 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 12 Jan 2019 19:37:18 +0100 Subject: [PATCH] avcodec/tiff: Check for 12bit gray fax Fixes: Assertion failure Fixes: 11898/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5759794191794176 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/tiff.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 5a4271c012..112f5b52f4 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -619,7 +619,7 @@ static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int strid if (s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3 || s->compr == TIFF_G4) { - if (is_yuv) + if (is_yuv || p->format == AV_PIX_FMT_GRAY12) return AVERROR_INVALIDDATA; return tiff_unpack_fax(s, dst, stride, src, size, width, lines);