From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/3] avcodec/jpeg2000htdec: Avoid freeing uninitialized pointers in ff_jpeg2000_decode_htj2k()
Date: Wed, 2 Aug 2023 02:01:33 +0200
Message-ID: <20230802000135.26482-1-michael@niedermayer.cc> (raw)
Fixes: freeing of uninitialized pointers
Fixes: part of 58299
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/jpeg2000htdec.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavcodec/jpeg2000htdec.c b/libavcodec/jpeg2000htdec.c
index 4c4e54710d..2b082b3b2f 100644
--- a/libavcodec/jpeg2000htdec.c
+++ b/libavcodec/jpeg2000htdec.c
@@ -1174,8 +1174,8 @@ ff_jpeg2000_decode_htj2k(const Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c
int ret;
/* Temporary buffers */
- int32_t *sample_buf;
- uint8_t *block_states;
+ int32_t *sample_buf = NULL;
+ uint8_t *block_states = NULL;
int32_t n, val; // Post-processing
--
2.17.1
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next reply other threads:[~2023-08-02 0:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-02 0:01 Michael Niedermayer [this message]
2023-08-02 0:01 ` [FFmpeg-devel] [PATCH 2/3] avcodec/jpeg2000htdec: Consolidate jpeg2000 spec bits in jpeg2000_bitbuf_refill_backwards() Michael Niedermayer
2023-08-05 1:41 ` Pierre-Anthony Lemieux
2023-08-05 15:52 ` Michael Niedermayer
2023-08-02 0:01 ` [FFmpeg-devel] [PATCH 3/3] avcodec/jpeg2000htdec: Check m Michael Niedermayer
2023-08-05 1:19 ` Pierre-Anthony Lemieux
2023-08-05 16:30 ` Michael Niedermayer
2023-08-06 16:28 ` Pierre-Anthony Lemieux
2023-08-11 0:04 ` Pierre-Anthony Lemieux
2023-08-03 8:20 ` [FFmpeg-devel] [PATCH 1/3] avcodec/jpeg2000htdec: Avoid freeing uninitialized pointers in ff_jpeg2000_decode_htj2k() Tomas Härdin
2023-08-03 15:36 ` Michael Niedermayer
2023-08-03 20:50 ` Tomas Härdin
2023-08-03 20:58 ` Pierre-Anthony Lemieux
2023-08-04 3:36 ` Caleb Etemesi
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