From 433941a7ba0427621936e353568b2636e62506fc Mon Sep 17 00:00:00 2001 From: Daniel Kang Date: Sun, 9 Jan 2011 15:05:55 -0500 Subject: [PATCH] Check for pgm invalid max val --- libavcodec/pnm.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/libavcodec/pnm.c b/libavcodec/pnm.c index 536b344..43438b7 100644 --- a/libavcodec/pnm.c +++ b/libavcodec/pnm.c @@ -140,6 +140,10 @@ int ff_pnm_decode_header(AVCodecContext *avctx, PNMContext * const s) if (avctx->pix_fmt != PIX_FMT_MONOWHITE) { pnm_get(s, buf1, sizeof(buf1)); s->maxval = atoi(buf1); + if (s->maxval <= 0) { + av_log(avctx, AV_LOG_ERROR, "Invalid maxval: %d\n", s->maxval); + return -1; + } if (s->maxval >= 256) { if (avctx->pix_fmt == PIX_FMT_GRAY8) { avctx->pix_fmt = PIX_FMT_GRAY16BE; -- 1.7.2.2