Module: libav Branch: master Commit: 6a99310fce49f51773ab7d8ffa4f4748bbf58db9
Author: Anton Khirnov <[email protected]> Committer: Anton Khirnov <[email protected]> Date: Sat Sep 29 19:16:32 2012 +0200 wmalosslessdec: Fix reading too many bits in decode_channel_residues() Fixes a part of CVE-2012-2795 CC:[email protected] Based on a patch by Michael Niedermayer <[email protected]> Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind --- libavcodec/wmalosslessdec.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c index dc83b06..b97f397 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -520,7 +520,7 @@ static int decode_channel_residues(WmallDecodeCtx *s, int ch, int tile_size) residue = quo; else { rem_bits = av_ceil_log2(ave_mean); - rem = rem_bits ? get_bits(&s->gb, rem_bits) : 0; + rem = rem_bits ? get_bits_long(&s->gb, rem_bits) : 0; residue = (quo << rem_bits) + rem; } _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
