Module: libav Branch: release/0.6 Commit: 679de9b5aa511dfcbb223b4a0a42382f95c104e8
Author: Ronald S. Bultje <[email protected]> Committer: Reinhard Tartler <[email protected]> Date: Fri May 4 16:06:26 2012 -0700 ea: check chunk_size for validity. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: [email protected] (cherry picked from commit 273e6af47b38391f2bcc157cca0423fe7fcbf55c) Signed-off-by: Reinhard Tartler <[email protected]> (cherry picked from commit 6a86b705e1d4b72f0dddfbe23ad3eed9947001d5) Signed-off-by: Reinhard Tartler <[email protected]> (cherry picked from commit e74bc64dd376c4691a610ba62a66ed30affc97ec) Conflicts: libavformat/electronicarts.c --- libavformat/electronicarts.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/libavformat/electronicarts.c b/libavformat/electronicarts.c index 86d7f91..5f48529 100644 --- a/libavformat/electronicarts.c +++ b/libavformat/electronicarts.c @@ -457,12 +457,17 @@ static int ea_read_packet(AVFormatContext *s, while (!packet_read) { chunk_type = get_le32(pb); - chunk_size = (ea->big_endian ? get_be32(pb) : get_le32(pb)) - 8; + chunk_size = ea->big_endian ? get_be32(pb) : get_le32(pb); + if (chunk_size <= 8) + return AVERROR_INVALIDDATA; + chunk_size -= 8; switch (chunk_type) { /* audio data */ case ISNh_TAG: /* header chunk also contains data; skip over the header portion*/ + if (chunk_size < 32) + return AVERROR_INVALIDDATA; url_fskip(pb, 32); chunk_size -= 32; case ISNd_TAG: _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
