Fixes: Use of uninitialized memory
Fixes: 472020020/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DCA_DEC_fuzzer-6433045331902464
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
dxv assumes that newly reallocated memory in tex_data is not uninitialized
thus we have to do that too in case of reallocation in ff_lzf_uncompress()
Fixes: 475000819/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_DEC_fuzzer-5571269310611456
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
size represents the output size
randomly changing it but not reseting it on errors leaks uninitialized memory.
Fixes: 475000819/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_DEC_fuzzer-5571269310611456
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
In the case where the last sorted value was -1u and we where on the first
pass of run1 we failed to fill the last few values of bitmap
No real world testcase is known
Fixes: use of uninitialized memory
Fixes: 460333808/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFV1_fuzzer-6370167888347136
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: use of uninitialized memory
Fixes: 451655450/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DCA_DEC_fuzzer-6527248623796224
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
The ldrsw instruction requires immediate offset with # prefix.
This fixes the syntax error introduced in commit 26752368f0
(aarch64/h26x: Add put_hevc_pel_bi_w_pixels) where the
load_bi_w_pixels_param macro was added.
Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
The `sub_packet` index in `QDM2Context` was not reset to 0 when
`qdm2_decode_frame` started processing a new packet. If an error
occurred during the decoding of a previous packet, `sub_packet` would
retain a non-zero value.
In subsequent calls to `qdm2_decode_frame` with a new packet, this
non-zero `sub_packet` value caused `qdm2_decode` to skip
`qdm2_decode_super_block`. This function is responsible for initializing
packet lists with pointers to the current packet's data. Skipping it led
to the use of stale pointers from the previous (freed) packet, resulting
in a heap-use-after-free vulnerability.
This patch explicitly resets `s->sub_packet = 0` at the beginning of
`qdm2_decode_frame`, ensuring correct initialization for each new
packet.
Fixes: OSS-Fuzz issue 476179569
(https://issues.oss-fuzz.com/issues/476179569).
Fixes: tickets/4663/levels30.jp2
The file decodes without error messages and no integer overflows
The file before the broader M_b check did decode with error messages and integer overflows but also no visual artifacts
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This file is excempt from the indent checker script, as there
are a few other bits in it that the script wants to reformat
into slightly worse form, or which might not warrant being
reformatted.
But these instructions should indeed be indented this way.
The hardcoded extra 120 samples results in the side data reporting the need to
discard the entire packet rather than the padding samples.
This is in line with the behavior of the libopus encoder.
Signed-off-by: James Almer <jamrial@gmail.com>
Sample size is always sizeof(float), is planar is a simple if
given that these codecs only support float and planar float.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
(It would even be possible to avoid a clobbering m10 in
MASKED_COPY and the mask register (%3) in MASKED_COPY2
when VEX encoding is in use.)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
The result of using pmaddwd with the coefficients 1,-1,...,1,-1
is just the negative of using pmaddwd with the coefficients
-1,1,...,-1,1, so avoid one pmaddwd.
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Avoid incrementing lowq and highq inside the loop by using
complex addressing modes, avoiding to undo said modification
at the end of the horizontal loop.
For inputq, modify istrideq outside of the loop so that
it is only modified once at the end of the horizontal loop.
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Sign extend the integer arguments directly from the stack
instead of loading qwords, followed by sign-extending the
lower half.
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Up until now, cfhdencdsp used constants consisting
of -1, 1, ...,-1,1 words and 1, -1,...,1,-1 words
for use as constants in pmaddwd. But one can use
the same constants if one shuffles the words in
a dword the opposite order. Similarly for some other
constants. This also allowed to avoid a register in
chfdenc_vert_filter.
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
The b_adapt option allows users to control adaptive B-frame decision
when lookahead is enabled in HEVC encoding. This feature was already
available for H.264 and AV1 encoders, but was missing from HEVC.
Signed-off-by: Diego de Souza <ddesouza@nvidia.com>
These names are a remnant of dsputil when all the DSP functions
from all codecs were part of DSPcontext.
Reviewed-by: Rémi Denis-Courmont <remi@remlab.net>
Reviewed-by: Sean McGovern <gseanmcg@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Now that the SSE2/AVX functions are no longer restricted
to those systems having an aligned stack, the MMXEXT functions
are always overridden (except for ancient systems without
SSE2), so remove them.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Allocate it via cglobal as usual. This makes the SSE2/AVX functions
available when HAVE_ALIGNED_STACK is false; it also avoids
modifying rsp unnecessarily in the deblock_h_luma_intra_10 functions
on Win64.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
They are a remnant of the MMX functions (which processed
only eight pixels at a time, so that it was called twice
via a wrapper; the actual MMX function had "v8" in its name
instead of simply v) which have been removed in commit
4618f36a24.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Forgotten in 4618f36a24.
Also remove a PASS8ROWS wrapper that seems to have been always
unused.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
