ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Aug 17 03:54:56 2017 +0200| [cadab5a2a74d715fc16325bd89f8b8091def1083] | committer: Michael Niedermayer
avcodec/pixlet: fixes integer overflow in read_highpass() Fixes: runtime error: negation of -2147483648 cannot be represented in type 'int32_t' (aka 'int'); cast to an unsigned type to negate this value to itself Fixes: 2879/clusterfuzz-testcase-minimized-6317542639403008 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=cadab5a2a74d715fc16325bd89f8b8091def1083 --- libavcodec/pixlet.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/pixlet.c b/libavcodec/pixlet.c index a9661d3ab6..088226bdda 100644 --- a/libavcodec/pixlet.c +++ b/libavcodec/pixlet.c @@ -331,6 +331,9 @@ static int read_highpass(AVCodecContext *avctx, uint8_t *ptr, int plane, AVFrame return AVERROR_INVALIDDATA; } + if (a == INT32_MIN) + return AVERROR_INVALIDDATA; + ret = read_high_coeffs(avctx, ptr + bytestream2_tell(&ctx->gb), dest, size, c, (b >= FFABS(a)) ? b : a, d, ctx->band[plane][i + 1].width, stride); _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
