ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Dec 23 20:20:08 2021 +0100| [10add8bb66b7c9d5999aa5b5a37eef3df27e934a] | committer: Michael Niedermayer
avcodec/cdgraphics: avoid signed overflow in alpha Fixes: left shift of 255 by 24 places cannot be represented in type 'int' Fixes: 42766/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CDGRAPHICS_fuzzer-5142826105569280 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=10add8bb66b7c9d5999aa5b5a37eef3df27e934a --- libavcodec/cdgraphics.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/cdgraphics.c b/libavcodec/cdgraphics.c index 06f8392094..a83babdf1e 100644 --- a/libavcodec/cdgraphics.c +++ b/libavcodec/cdgraphics.c @@ -122,7 +122,7 @@ static void cdg_load_palette(CDGraphicsContext *cc, uint8_t *data, int low) r = ((color >> 8) & 0x000F) * 17; g = ((color >> 4) & 0x000F) * 17; b = ((color ) & 0x000F) * 17; - palette[i + array_offset] = cc->alpha[i + array_offset] << 24 | r << 16 | g << 8 | b; + palette[i + array_offset] = (uint32_t)cc->alpha[i + array_offset] << 24 | r << 16 | g << 8 | b; } cc->frame->palette_has_changed = 1; } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
