Commit graph

49802 commits

Author SHA1 Message Date
Ross Burton
5ff181c025 libavcodec/arm/mlpdsp_armv5te: fix label format to work with binutils 2.43
binutils 2.43 has stricter validation for labels[1] and results in errors
when building ffmpeg for armv5:

src/libavcodec/arm/mlpdsp_armv5te.S:232: Error: junk at end of line, first unrecognized character is `0'

Remove the leading zero in the "01" label to resolve this error.

[1] https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=226749d5a6ff0d5c607d6428d6c81e1e7e7a994b

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit 654bd47716)
2024-08-16 13:45:51 +03:00
David Rosca
96e648ddbc lavc/vaapi_av1: Avoid sending the same slice buffer multiple times
When there are multiple tiles in one slice buffer, use multiple slice
params to avoid sending the same slice buffer multiple times and thus
increasing the bitstream size the driver will need to upload to hw.

Reviewed-by: Neal Gompa <ngompa13@gmail.com>
Signed-off-by: David Rosca <nowrep@gmail.com>
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
(cherry picked from commit d2d911eb9a)
2024-08-05 09:32:37 +08:00
David Rosca
345855af80 lavc/vaapi_decode: Make it possible to send multiple slice params buffers
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
Signed-off-by: David Rosca <nowrep@gmail.com>
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
(cherry picked from commit fe9d889dcd)
2024-08-05 09:32:37 +08:00
Michael Niedermayer
679a572e44
avcodec/snow: Fix off by 1 error in run_buffer
Fixes: out of array access
Fixes: 70741/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SNOW_fuzzer-5703668010647552

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 06f5ed40f8)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-08-02 22:14:46 +02:00
Michael Niedermayer
8b0cf8ab31
avcodec/utils: apply the same alignment to YUV410 as we do to YUV420 for snow
The snow encoder uses block based motion estimation which can read out of array if
insufficient alignment is used

It may be better to only apply this for the encoder, as it would safe a few bytes of memory
for the decoder. Until then, this fixes the issue in a simple way.

Fixes: out of array access
Fixes: 68963/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SNOW_fuzzer-4979988435632128
Fixes: 68969/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SNOW_fuzzer-6239933667803136.fuzz
Fixed: 70497/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SNOW_fuzzer-5751882631413760

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 58fbeb59e7)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-08-02 22:14:46 +02:00
James Almer
d0d740946b avcodec/aacps_tablegen_template: don't redefine CONFIG_HARDCODED_TABLES
Fixes relevant warnings when compiling with --enable-hardcoded-tables

Signed-off-by: James Almer <jamrial@gmail.com>
(cherry picked from commit f4daf633b2)
2024-08-01 12:14:46 -03:00
Andreas Rheinhardt
517e559a46 avcodec/pcm-bluray/dvd: Use correct pointer types on BE
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
(cherry picked from commit 347a70f101)
2024-07-31 10:02:55 -03:00
Leo Izen
0ab20b5788
avcodec/pngenc: fix sBIT writing for indexed-color PNGs
We currently write invalid sBIT entries for indexed PNGs, which by PNG
specification[1] must be 3-bytes long. The values also are capped at 8
for indexed-color PNGs, not the palette depth. This patch fixes both of
these issues previously fixed in the decoder, but not the encoder.

[1]: https://www.w3.org/TR/png-3/#11sBIT

Regression since: c125860892.

Signed-off-by: Leo Izen <leo.izen@gmail.com>
Reported-by: Ramiro Polla: <ramiro.polla@gmail.com>
2024-07-30 05:45:08 -04:00
Leo Izen
63e90b338c
avcodec/pngdec: use 8-bit sBIT cap for indexed PNGs per spec
The PNG specification[1] says that sBIT entries must be at most the bit
depth specified in IHDR, unless the PNG is indexed-color, in which case
sBIT must be between 1 and 8. We should not reject valid sBITs on PNGs
with indexed color.

[1]: https://www.w3.org/TR/png-3/#11sBIT

Regression since 84b454935f.

Signed-off-by: Leo Izen <leo.izen@gmail.com>
Reported-by: Ramiro Polla <ramiro.polla@gmail.com>
2024-07-30 05:45:01 -04:00
Zhao Zhili
a83c1a3db9 avcodec/videotoolboxenc: Fix bitrate doesn't work as expected
Commit 4ef5e7d472 add qmin/qmax support to videotoolbox encoder.
The default value of (qmin, qmax) is (2, 31), which makes bitrate
control doesn't work as users' expectations.

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
(cherry picked from commit d07da7539d)
2024-07-26 20:13:07 +08:00
Michael Niedermayer
a0d1902e2c
avcodec/hdrenc: Allocate more space
This needs to be double checked or a checking way of writing should be used

Fixes: out of array access
Fixes: 70007/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HDR_fuzzer-5478704150020096

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 204f7f8cc7)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:36:22 +02:00
Michael Niedermayer
adcb97538a
avcodec/cfhdenc: Height of 16 is not supported
Fixes: out of array access
Fixes: 68941/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-5990952685600768

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 5dde255abd)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:36:21 +02:00
Michael Niedermayer
68a017f6b5
avcodec/cfhdenc: Allocate more space
Fixes: Assertion failure
Fixes: 68979/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-5375874714107904

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a308d79e4d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:36:21 +02:00
Michael Niedermayer
71dc382513
avcodec/osq: fix integer overflow when applying factor
Fixes: signed integer overflow: -35511773 * 256 cannot be represented in type 'int'
Fixes: 70406/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6545326804434944

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 6420c1bf30)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:36:21 +02:00
Michael Niedermayer
354d5b9737
avcodec/osq: avoid using too large numbers for shifts and integers in update_residue_parameter()
Fixes: 2.96539e+09 is outside the range of representable values of type 'int'
Fixes: Assertion n>=0 && n<=32 failed at libavcodec/get_bits.h:423
Fixes: 62241/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-4525761925873664
Fixes: 70406/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6545326804434944

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 56c334d732)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:36:20 +02:00
Michael Niedermayer
5faff14b90
avcodec/vaapi_encode: Check hwctx
Fixes: null pointer dereference
Fixes: 70376/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_VAAPI_fuzzer-4733551250046976

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 3cd077e282)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:36:20 +02:00
Michael Niedermayer
c2ec2994c3
avcodec/proresdec: Consider negative bits left
Fixes: 70036/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PRORES_fuzzer-6298797647396864
Fixes: shift exponent 40 is too large for 32-bit type 'uint32_t' (aka 'unsigned int')

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 419eee6356)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:36:20 +02:00
Michael Niedermayer
b158f7c62b
avcodec/alsdec: Clear shift_value
(the exact issue is unreproducable but the use of uninitialized data is reproducable)

Should fix: signed integer overflow: -2147483648 - 127 cannot be represented in type 'int'
Should fix: 69881/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-4751301204836352

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 6194cb87cb)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:36:19 +02:00
Michael Niedermayer
5c2dfe559e
avcodec/hevc/hevcdec: Do not allow slices to depend on failed slices
An alternative would be to leave the context unchanged on failure of hls_slice_header()

Fixes: out of array access
Fixes: NULL pointer dereference
Fixes: 69584/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-5931086299856896
Fixes: 69724/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-5104066422702080
Fixes: 70422/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-5908731129298944

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 5d9544cfb0)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:36:19 +02:00
Michael Niedermayer
587acd0d40
avcodec/pnmdec: Use 64bit for input size check
Fixes: out of array read
Fixes: poc3

Reported-by: VulDB CNA Team
Found-by: CookedMelon
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 3faadbe2a2)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:43 +02:00
Michael Niedermayer
b10323ef64
avcodec/mpeg12enc: Use av_rescale() in vbv_buffer_size computation
Fixes: signed integer overflow: 20 * 2314885530818453759 cannot be represented in type 'long'
Fixes: 69098/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG2VIDEO_fuzzer-6107989688778752

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 0993ef675f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:43 +02:00
Michael Niedermayer
964a3e2fa7
avcodec/utvideoenc: Use unsigned shift to build flags
Fixes: left shift of 255 by 24 places cannot be represented in type 'int'
Fixes: 69083/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_UTVIDEO_fuzzer-5608202363273216

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 69e90491f1)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:42 +02:00
Michael Niedermayer
8d294ee692
avcodec/j2kenc: Merge dwt_norm into lambda
This moves computations out of a loop

This may help with UB in vsynth*-jpeg2000-yuva444p16

Fixes: signed integer overflow: 31665934879948800 * 9998 cannot be represented in type 'long'
Fixes: 69024/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-5949662967169024

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a84fbd7471)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:42 +02:00
Michael Niedermayer
d02a49ba01
avcodec/vc2enc: Fix overflows with storing large values
Fixes: left shift of 1431634944 by 2 places cannot be represented in type 'int'
Fixes: left shift of 1073741824 by 1 places cannot be represented in type 'int'
Fixes: 69061/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VC2_fuzzer-6325700826038272

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit af99358353)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:42 +02:00
Michael Niedermayer
72d3f1f802
avcodec/mpegvideo_enc: Do not duplicate pictures on shifting
Fixes: out of array access
Fixes: 69098/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG2VIDEO_fuzzer-6107989688778752
Fixes: 69599/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-4848626296225792.fuzz

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 9c8881cb35)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:41 +02:00
Michael Niedermayer
3e0da83058
avcodec/tiff: Check value on positive signed targets
Fixes: CID1604593 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 66d6b8033b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:41 +02:00
Michael Niedermayer
386e7ac113
avcodec/flac_parser: Assert that we do not overrun the link_penalty array
Helps: CID1454676 Out-of-bounds read

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 9af348bd1a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:38 +02:00
Michael Niedermayer
7669cc2b8b
avcodec/osq: avoid signed overflow in downsample path
Fixes: signed integer overflow: 865309950 * 256 cannot be represented in type 'int'
Fixes: 69191/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6310214413385728

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit ed34b0c54e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:38 +02:00
Michael Niedermayer
64c26cd18a
avcodec/pixlet: Simplify pfx computation
Found by reviewing code related to CID1604365 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 0474614e6c)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:37 +02:00
Michael Niedermayer
8982bf0d84
avcodec/motion_est: Fix score squaring overflow
Fixes: CID1604552 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit f18b442370)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:37 +02:00
Michael Niedermayer
d3d9798312
avcodec/mlpenc: Use 64 for ml, mr
Fixes: CID1604429 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 06f01d9fa0)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:37 +02:00
Michael Niedermayer
ecfdecabfb
avcodec/loco: Check loco_get_rice() for failure
Fixes: CID1604495 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit d553276843)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:36 +02:00
Michael Niedermayer
66f42ad1d5
avcodec/loco: check get_ur_golomb_jpegls() for failure
Fixes: CID1604400 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b989986641)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:36 +02:00
Michael Niedermayer
31bc90cd2f
avcodec/leaddec: Check init_get_bits8() for failure
Fixes: CID1604416 Unchecked return value

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 0e3e7e8aeb)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:36 +02:00
Michael Niedermayer
4da9443735
avcodec/imm4: check cbphi for error
Fixes: CID1604356 Overflowed constant
Fixes: CID1604573 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 6e4c037833)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:35 +02:00
Michael Niedermayer
76cabac818
avcodec/iff: Use signed count
This is more a style fix than a bugfix (CID1604392 Overflowed constant)

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit cfe66dfebb)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:35 +02:00
Michael Niedermayer
01458ce446
avcodec/golomb: Assert that k is in the supported range for get_ur/sr_golomb()
Found by code review related to CID1604563 Overflowed return value

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b2aaeb81f6)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:35 +02:00
Michael Niedermayer
da5d437757
avcodec/golomb: Document return for get_ur_golomb_jpegls() and get_sr_golomb_flac()
Found while reviewing code related to CID1604409 Overflowed return value

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 7cf5b83f6f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:34 +02:00
Michael Niedermayer
f66256651b
avcodec/dxv: Fix type in get_opcodes()
Found by code review related to CID1604386 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit e5af1c6e91)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:34 +02:00
Michael Niedermayer
d6efa604a2
avcodec/cri: Check length
Fixes: CID1604394 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 69dcd123f1)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:34 +02:00
Michael Niedermayer
72b087cf0d
avcodec/xsubdec: Check parse_timecode()
Fixes: CID1604490 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 96fd9417e2)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:33 +02:00
Michael Niedermayer
eebdb93d94
avcodec/proresenc_kostya: use unsigned alpha for rotation
Fixes: left shift of negative value -208
Fixes: 69073/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PRORES_KS_fuzzer-4745020002336768

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 93e0265e27)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:32 +02:00
Michael Niedermayer
dad5fcb33d
avcodec/vvc/refs: Use unsigned mask
Not a bugfix, but might fix CID1604361 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Reviewed-by: Nuo Mi <nuomi2021@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit eb552ecd54)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:29 +02:00
Mark Thompson
3c85e12e5a
cbs_av1: Reject thirty-two zero bits in uvlc code
The spec allows at least thirty-two zero bits followed by a one to mean
2^32-1, with no constraint on the number of zeroes.  The libaom
reference decoder does not match this, instead reading thirty-two zeroes
but not the following one to mean 2^32-1.  These two interpretations are
incompatible and other implementations may follow one or the other.
Therefore reject thirty-two zeroes because the intended behaviour is not
clear.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 7110a36ba0)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:23 +02:00
Michael Niedermayer
c40b96982d
avcodec/mfenc: check IMFSample_ConvertToContiguousBuffer() for failure
Fixes: CID1591911 Logically dead code

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 86cd7c68bc)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:19 +02:00
Michael Niedermayer
45b2c1f810
avcodec/vc1_loopfilter: Factor duplicate code in vc1_b_h_intfi_loop_filter()
Fixes: CID1435168

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 63ecce9ba8)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:19 +02:00
Michael Niedermayer
8c378a78c9
avcodec/vvc/ctu: Remove dead ret check
Fixes: CID1560040 Logically dead code

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 97ae47f9e9)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:19 +02:00
Michael Niedermayer
1056db9bf8
avcodec/vvc/dec: Remove constant eos_at_start
Fixes: CID1560041 'Constant' variable guards dead code

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit d22a33710a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:18 +02:00
Michael Niedermayer
d304d1ea30
avcodec/cbs_jpeg: Try to move the read entity to one side in a test
The checked entity should be alone on one side of the check, this avoids
complex considerations of overflows.
This fixes a issue of bad style in our code and a coverity issue.

Fixes: CID1439654 Untrusted pointer read

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 385784a148)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:18 +02:00
Michael Niedermayer
2d8a4ca3b1
avcodec/vvc/dec: Check ff_init_cabac_decoder() for failure
Fixes: signed integer overflow: 1107820800 + 1107820800 cannot be represented in type 'int'
Fixes: left shift of 1091059712 by 6 places cannot be represented in type 'int'
Fixes: 69910/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-5162839971528704

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Nuo Mi <nuomi2021@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 6398242bb2)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:15 +02:00