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| author | Shreesh Adiga <16567adigashreesh@gmail.com> | 2020-11-09 19:53:22 +0530 |
|---|---|---|
| committer | Avi Halachmi (:avih) <avihpit@yahoo.com> | 2020-11-09 19:44:07 +0200 |
| commit | baf45b3bc99c5c307d0aa52ff83a9a365a054aed (patch) | |
| tree | 07a144bc38974958ca0bffb220980e81f27e4dcb | |
| parent | 8ddd4547fc2d3b813c88b586cf8a579bff4afa4f (diff) | |
| download | mpv-baf45b3bc99c5c307d0aa52ff83a9a365a054aed.tar.bz2 mpv-baf45b3bc99c5c307d0aa52ff83a9a365a054aed.tar.xz | |
vo_sixel: Add checks to prevent null pointer dereferencing.
| -rw-r--r-- | video/out/vo_sixel.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/video/out/vo_sixel.c b/video/out/vo_sixel.c index cce6a3da9d..5a5564edc1 100644 --- a/video/out/vo_sixel.c +++ b/video/out/vo_sixel.c @@ -162,7 +162,10 @@ static void dealloc_dithers_and_buffer(struct vo* vo) { struct priv* priv = vo->priv; - talloc_free(priv->buffer); + if (priv->buffer) { + talloc_free(priv->buffer); + priv->buffer = NULL; + } if (priv->dither) { sixel_dither_unref(priv->dither); @@ -296,6 +299,10 @@ static void flip_page(struct vo *vo) { struct priv* priv = vo->priv; + // Make sure that image and dither are valid before drawing + if (priv->buffer == NULL || priv->dither == NULL) + return; + // Go to the offset row and column, then display the image printf(ESC_GOTOXY, priv->top, priv->left); sixel_encode(priv->buffer, priv->width, priv->height, |