[FFmpeg-devel] [PATCH 1/3] avcodec/jpeg2000htdec: Avoid freeing uninitialized pointers in ff_jpeg2000_decode_htj2k()

[Tomas Härdin]

ons 2023-08-02 klockan 02:01 +0200 skrev Michael Niedermayer:
> 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 at 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;

Looks OK

/Tomas