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Commit Graph

26 Commits

Author SHA1 Message Date
Diego Biurrun
d34a133b78 dfa: Disallow odd width/height and add proper bounds check for DDS1 chunks
DDS1 chunks are decoded in 2x2 blocks, odd chunk width or height is not
allowed in that case. Also ensure that the decode buffer is big enough
for all blocks being processed.

Bug-Id: CVE-2017-9992
CC: libav-stable@libav.org
2017-08-13 19:58:40 +02:00
Anton Khirnov
fd9212f2ed Mark some arrays that never change as const. 2017-02-01 10:42:59 +01:00
Vittorio Giovara
def97856de lavc: AV-prefix all codec capabilities
Express bitfields more simply.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
2015-07-27 15:24:58 +01:00
Diego Biurrun
cc8163e1a3 avcodec: more correct printf specifiers 2014-03-22 14:08:20 +01:00
Diego Biurrun
b2bed9325d cosmetics: Group .name and .long_name together in codec/format declarations 2013-10-03 23:32:01 +02:00
Kostya Shishkov
56c1b92576 dfa: implement missing TDLT coding method 2013-04-09 18:32:00 +02:00
Anton Khirnov
3623589edc dfa: check for invalid access in decode_wdlt().
This can happen when the number of skipped lines is not consistent with
the number of coded lines.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
2013-04-04 07:54:07 +02:00
Anton Khirnov
759001c534 lavc decoders: work with refcounted frames. 2013-03-08 07:38:30 +01:00
Anton Khirnov
df9b956751 lavc: fix decode_frame() third parameter semantics for video decoders
It's got_frame, not data size
2012-12-04 21:45:36 +01:00
Anton Khirnov
594d4d5df3 lavc: add a wrapper for AVCodecContext.get_buffer().
It will be useful in the upcoming transition to refcounted AVFrames.
2012-12-04 21:41:59 +01:00
Diego Biurrun
5bac2d0c30 avutil: Move memcpy_backptr() to mem.c
The function is used elsewhere and does not belong with the LZO code.
2012-10-25 11:36:57 +02:00
Mans Rullgard
a153e45b95 dfa: use av_memcpy_backptr() where previously impossible
Since the requirement for output padding has been lifted, we can
use av_memcpy_backptr() here as well.

Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-10-23 18:57:24 +01:00
Diego Biurrun
e831b3b852 av_memcpy_backptr: Drop no longer necessary malloc padding
Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-10-23 18:57:24 +01:00
Anton Khirnov
716d413c13 Replace PIX_FMT_* -> AV_PIX_FMT_*, PixelFormat -> AVPixelFormat 2012-10-08 07:13:26 +02:00
Anton Khirnov
d05f72c754 dfa: improve boundary checks in decode_dds1()
Fixes CVE-2012-2798

CC:libav-stable@libav.org
2012-09-29 19:17:07 +02:00
Anton Khirnov
ee715f49a0 dfa: check that the caller set width/height properly.
Fixes CVE-2012-2786.
2012-09-29 09:27:08 +02:00
Anton Khirnov
36ef5369ee Replace all CODEC_ID_* with AV_CODEC_ID_* 2012-08-07 16:00:24 +02:00
Kostya Shishkov
fb5c1aaea6 dfa: use more meaningful return codes 2012-05-06 19:18:27 +02:00
Kostya Shishkov
8099187e89 dfa: add some checks to ensure that decoder won't write past frame end 2012-05-06 09:31:52 +02:00
Martin Storsjö
00c3b67b8a cosmetics: Align codec declarations
Also break some long lines, remove codec function placeholder comments
and add spaces in sample/pixel format lists.

Signed-off-by: Martin Storsjö <martin@martin.st>
2012-04-06 22:37:38 +03:00
Paul B Mahol
29b0d94b43 dfa: convert to bytestream2 API
Protects from overreads.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2012-03-12 21:47:40 -07:00
Anton Khirnov
ec6402b7c5 lavc: use designated initialisers for all codecs.
It's more readable and less prone to breakage.
2011-07-29 08:42:34 +02:00
Diego Biurrun
b1bb3b8d87 dfa: Remove unused variable.
This fixes the warning:
libavcodec/dfa.c:189: warning: unused variable ‘frame_end’
2011-05-15 13:12:47 +02:00
Reimar Döffinger
2c9a5172d3 dfa: fix buffer overflow checks to avoid integer overflows.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2011-05-13 07:38:54 +02:00
Ronald S. Bultje
d38345878c dfa: protect pointer range checks against overflows. 2011-03-29 07:14:44 -07:00
Kostya Shishkov
42315dabce Chronomaster DFA decoder
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2011-03-28 16:55:03 +02:00