Module: libav Branch: master Commit: d423dd72be451462c6fb1cbbe313bed0194001ab
Author: Michael Niedermayer <[email protected]> Committer: Anton Khirnov <[email protected]> Date: Fri Oct 3 22:50:45 2014 +0200 smc: fix the bounds check Fixes invalid writes when there are more blocks in a run than total remaining blocks. CC: [email protected] Bug-ID: CVE-2014-8548 Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Anton Khirnov <[email protected]> --- libavcodec/smc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/smc.c b/libavcodec/smc.c index 46903ab..c6541da 100644 --- a/libavcodec/smc.c +++ b/libavcodec/smc.c @@ -70,7 +70,7 @@ typedef struct SmcContext { row_ptr += stride * 4; \ } \ total_blocks--; \ - if (total_blocks < 0) \ + if (total_blocks < !!n_blocks) \ { \ av_log(s->avctx, AV_LOG_INFO, "warning: block counter just went negative (this should not happen)\n"); \ return; \ _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
