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authorMichael Niedermayer <michaelni@gmx.at>2012-04-22 12:09:59 +0200
committerMichael Niedermayer <michaelni@gmx.at>2012-04-22 12:09:59 +0200
commitfa5dacce143f3fbe8eac14d5a99e926b2787e9e6 (patch)
tree6177ae85596a49b6e871e984b4ee7e20a5120483 /libavcodec/indeo5.c
parent2a59abf1a8859bd63f5760e98ffcb381d407451d (diff)
downloadffmpeg-fa5dacce143f3fbe8eac14d5a99e926b2787e9e6.tar.gz
indeo5: check against scaleable frames in non scaleable streams.
Fixes a null ptr dereference. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/indeo5.c')
-rw-r--r--libavcodec/indeo5.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/indeo5.c b/libavcodec/indeo5.c
index 5614e80519..1945f06a3f 100644
--- a/libavcodec/indeo5.c
+++ b/libavcodec/indeo5.c
@@ -356,6 +356,12 @@ static int decode_pic_hdr(IVI5DecContext *ctx, AVCodecContext *avctx)
ctx->gop_invalid = 0;
}
+ if (ctx->frame_type == FRAMETYPE_INTER_SCAL && !ctx->is_scalable) {
+ av_log(avctx, AV_LOG_ERROR, "Scalable inter frame in non scaleable stream\n");
+ ctx->frame_type = FRAMETYPE_INTER;
+ return AVERROR_INVALIDDATA;
+ }
+
if (ctx->frame_type != FRAMETYPE_NULL) {
ctx->frame_flags = get_bits(&ctx->gb, 8);