[FFmpeg-devel] [PATCH 1/2] tools/target_dec_fuzzer: Adjust threshold for TQI

[FFmpeg-devel] [PATCH 1/2] tools/target_dec_fuzzer: Adjust threshold for TQI

[Michael Niedermayer]

Fixes: Timeout
Fixes: 44455/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EATQI_fuzzer-6069950551293952

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 tools/target_dec_fuzzer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index 13766d22b9..cdb3b96c38 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -203,6 +203,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
     case AV_CODEC_ID_TAK:         maxsamples /= 1024;  break;
     case AV_CODEC_ID_TGV:         maxpixels  /= 32;    break;
     case AV_CODEC_ID_THEORA:      maxpixels  /= 16384; break;
+    case AV_CODEC_ID_TQI:         maxpixels  /= 1024;  break;
     case AV_CODEC_ID_TRUEMOTION2: maxpixels  /= 1024;  break;
     case AV_CODEC_ID_TSCC:        maxpixels  /= 1024;  break;
     case AV_CODEC_ID_VC1:         maxpixels  /= 8192;  break;
-- 
2.17.1

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[FFmpeg-devel] [PATCH 2/2] avcodec/jpeglsdec: Check get_ur_golomb_jpegls() for error

[Michael Niedermayer]

Fixes: Timeout
Fixes: Invalid shift
Fixes: 44548/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEGLS_fuzzer-556487680891289

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/jpeglsdec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/jpeglsdec.c b/libavcodec/jpeglsdec.c
index 6ca723f797..1766b8f09c 100644
--- a/libavcodec/jpeglsdec.c
+++ b/libavcodec/jpeglsdec.c
@@ -200,6 +200,8 @@ static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state,
 #endif
     ret = get_ur_golomb_jpegls(gb, k, state->limit - limit_add - 1,
                                state->qbpp);
+    if(ret < 0)
+        return -0x10000;
 
     /* decode mapped error */
     map = 0;
-- 
2.17.1

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Re: [FFmpeg-devel] [PATCH 2/2] avcodec/jpeglsdec: Check get_ur_golomb_jpegls() for error

[Paul B Mahol]

Please follow code style.
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Re: [FFmpeg-devel] [PATCH 2/2] avcodec/jpeglsdec: Check get_ur_golomb_jpegls() for error

[Michael Niedermayer]

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On Sat, Feb 12, 2022 at 10:27:13PM +0100, Paul B Mahol wrote:
> Please follow code style.

ill add the space between if and ( before applying
also, ill fix the other similar issues in the file in a seperate commit

thx

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nothing. -- Socrates

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Re: [FFmpeg-devel] [PATCH 1/2] tools/target_dec_fuzzer: Adjust threshold for TQI

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 613 bytes --]

On Sat, Feb 12, 2022 at 10:13:49PM +0100, Michael Niedermayer wrote:
> Fixes: Timeout
> Fixes: 44455/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EATQI_fuzzer-6069950551293952
> 
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
>  tools/target_dec_fuzzer.c | 1 +
>  1 file changed, 1 insertion(+)

will apply

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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

No great genius has ever existed without some touch of madness. -- Aristotle

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