Re: [FFmpeg-devel] [PATCH] libavutil/tests/lzo: Add check to avoid potential NULL pointer dereference

[Michael Niedermayer <michael@niedermayer.cc>]

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On Fri, Aug 08, 2025 at 02:08:42AM +0000, Jiasheng Jiang wrote:
> Add av_free() if qf_vid is NULL to avoid potential memory leak.
> 
> Fixes: 5d48e4eafa ("Merge commit 'a6a750c7ef240b72ce01e9653343a0ddf247d196'")
> Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>
> ---
>  libavutil/tests/lzo.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/libavutil/tests/lzo.c b/libavutil/tests/lzo.c
> index d7a78a1696..89e504601a 100644
> --- a/libavutil/tests/lzo.c
> +++ b/libavutil/tests/lzo.c
> @@ -45,6 +45,10 @@ int main(int argc, char *argv[]) {
>      long tmp[LZO1X_MEM_COMPRESS];
>      int inlen, outlen;
>      int i;
> +
> +    if (!in || !orig || !comp || !decomp)
> +        goto end;
> +
>      av_log_set_level(AV_LOG_DEBUG);
>      if (comp_level == 0) {
>          lzo1x_1_compress(orig, s, comp, &clen, tmp);
> @@ -71,6 +75,8 @@ int main(int argc, char *argv[]) {
>          av_log(NULL, AV_LOG_ERROR, "decompression incorrect\n");
>      else
>          av_log(NULL, AV_LOG_ERROR, "decompression OK\n");
> +
> +end:
>      fclose(in);

this could call flcose(NULL)

thx

[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Why not whip the teacher when the pupil misbehaves? -- Diogenes of Sinope

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