If max in clean_index is set to a negative ast->sample_size, the
following loop never ends:
while (max < 1024)
max += max;
Thus set ast->sample_size to 0 if it would otherwise be negative.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit ca234639ac)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The later is not correct
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 5d309d3091)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
index_scale is set to matroska->time_scale of type uint64_t.
When index_scale is int, the assignment can overflow and e.g. result
in index_scale = 0. This causes a floating point exception due to the
division by index_scale.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit eb9fb508b0)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
AV_PIX_FMT_MONOBLACK has the AV_PIX_FMT_FLAG_BITSTREAM flag, i.e.
linesize can be smaller than width.
Since x_offset is only check against the width, this can lead to
x_offset * bpp >= image_linesize.
In this case ptr could be set to a position outside the image_buf in
png_handle_row, leading to memory corruption and thus crashes.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 372aa0777a)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
During the loop ret can get changed. Since it is not set on all failure
paths, decode_frame_common can return 0 even though an error occurred.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 8f760be4d3)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This check was removed in commit 08aec6f6, but
s->last_picture.f->data[0] is still used in handle_p_frame_apng
unconditionally.
This fixes a segmentation fault.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 287dbb0771)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
And notify why the capture is impossible.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
(cherry picked from commit e8c4db0d4d)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The image decoding code does expect the image to be decoded immedeatly
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit d2184bf3b6)
Conflicts:
libavfilter/lavfutils.c
The existing check has two problems:
1) i + count can overflow, so that the check '< 256' returns true.
2) In the (i == 'N') case occurs a j-- so that the loop runs once more.
This can trigger the assertion 'nut->header_len[0] == 0' or cause
segmentation faults or infinite hangs.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 7c24ca1bda)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This fixes a segmentation fault when accessing the metadata.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 3ff1af2b0d)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
s->decoded_buffer is allocated with a min_size of:
2 * FFALIGN(blockstodecode, 8) * sizeof(*s->decoded_buffer)
Then it is assigned to s->decoded[0] (and s->decoded_buffer + FFALIGN(blockstodecode, 8)
to s->decoded[1]) and passed as out buffer to decode_array_0000.
In this function 64 elements of the out buffer are written
unconditionally and outside the array if blockstodecode is too small.
This causes memory corruption, leading to segmentation faults or other
crashes.
Thus change decode_array_0000 to write at most blockstodecode elements
of the out buffer.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 699341d647)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The opt_opencl_bench function copied the device name using strcpy without checking if the source string was larger.
This patch fixes this by replacing the strcpy with av_strlcpy, with the string copy size capped to the destination buffer size.
Signed-off-by: Maneesh Gupta <maneesh.gupta@amd.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit cf234552b8)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Otherwise range_start_decoding is not necessarily run and thus
ctx->rc.range still 0 in range_dec_normalize leading to an infinite
loop.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 464c49155c)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
GCC tool had a bug of PPC intrinsic interpret, which has been fixed in GCC 4.9.1. This bug lead to
errors in two of our previous patches. We found this when we update our GCC tools to 4.9.1 and by
reading the related info on GCC website. We fix our previous error in two separate commits
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 603c839398)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
this quiets a warning:
Failed to set VP8E_SET_NOISE_SENSITIVITY codec control: Unspecified
internal error
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Zern <jzern@google.com>
(cherry picked from commit 238ec505e2)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
We already have a dependency on awk and bc is sometimes not found in the
base system.
Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit a982c5d74f)
Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Conflicts:
doc/platform.texi
The server is properly equiped not to choke on that now.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 7ad27f1221)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Fixes double free with some applications
Fixes vlc ticket14121
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit e6e8cc8ce9)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
If begin is smaller than t, the subtraction 'begin -= t' wraps around,
because begin is unsigned. The same applies for end < t.
This causes segmentation faults.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit faf9fe2c22)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
If the same idx is used for more than one i, at least one entry in
sconf->chan_pos remains uninitialized.
This can cause segmentation faults.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit ef16501aeb)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This fixes an invalid read if end is 0:
band_end = ff_ac3_bin_to_band_tab[end-1] + 1;
Depending on what is before the array, this can cause stack smashing,
when band_end becomes too large.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit bc4fee7f2a)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
If band->thr is 0.0f, the division is undefined, making norm_fac not a
number or infinity, which causes psy_band->threshold to become NaN.
This is passed on to other variables until it finally reaches
sce->sf_idx and is converted to an integer (-2147483648).
This causes a segmentation fault when it is used as array index.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Reviewed-by: Claudio Freire <klaussfreire@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit e224aa4191)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This fixes segmentation faults, when pic->linesize[0] is negative.
In that case 'line * pic->linesize[0] + pixel_ptr' is treated as
unsigned and wraps around.
This reverts commit 7d78a964.
The problem was introduced in commit f7e1367f, which should obsolete
that commit.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit ae6fd7300b)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This more completely checks for truncation
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 32e06c485b)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
