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Code Issues Releases Activity

avcodec/faxcompr: Add missing runs check in decode_uncompressed()

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Fixes out of array access
Fixes: 54e488b9da4abbceaf405d6492515697/asan_heap-oob_32769b0_160_a8755eb08ee8f9579348501945a33955.TIF

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2015-11-05 21:35:23 +01:00
parent c9bfd6a8c3
commit d4a731b84a
1 changed files with 4 additions and 0 deletions
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4
libavcodec/faxcompr.c
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@@ -189,6 +189,10 @@ static int decode_uncompressed(AVCodecContext *avctx, GetBitContext *gb,
*mode = !*mode; *mode = !*mode;
if (newmode != *mode) { //FIXME CHECK if (newmode != *mode) { //FIXME CHECK
*(*runs)++ = 0; *(*runs)++ = 0;
if (*runs >= runend) {
av_log(avctx, AV_LOG_ERROR, "uncompressed run overrun\n");
return AVERROR_INVALIDDATA;
}
*mode = newmode; *mode = newmode;
} }
return 0; return 0;