Fixes: division by zero Fixes: 22974/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PFM_fuzzer-6270027077779456
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/pnm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/pnm.c b/libavcodec/pnm.c index a6ae01b494..aad23c7ae2 100644 --- a/libavcodec/pnm.c +++ b/libavcodec/pnm.c @@ -179,7 +179,7 @@ int ff_pnm_decode_header(AVCodecContext *avctx, PNMContext * const s) if (avctx->pix_fmt == AV_PIX_FMT_GBRPF32) { pnm_get(s, buf1, sizeof(buf1)); - if (av_sscanf(buf1, "%f", &s->scale) != 1) { + if (av_sscanf(buf1, "%f", &s->scale) != 1 || s->scale == 0.0 || !isfinite(s->scale)) { av_log(avctx, AV_LOG_ERROR, "Invalid scale.\n"); return AVERROR_INVALIDDATA; } -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
