ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Tue Feb 4 03:58:44 2025 +0100| [ce538ef97a7b1fdab6f2a3c8afc538c1cc3760d9] | committer: Michael Niedermayer
swscale/output: Fix integer overflow in yuv2gbrp_full_X_c() Fixes: signed integer overflow: 1966895953 + 210305024 cannot be represented in type 'int' Fixes: 391921975/clusterfuzz-testcase-minimized-ffmpeg_SWS_fuzzer-5916798905548800 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ce538ef97a7b1fdab6f2a3c8afc538c1cc3760d9 --- libswscale/output.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/libswscale/output.c b/libswscale/output.c index 9484339be0..2a6a20f2e6 100644 --- a/libswscale/output.c +++ b/libswscale/output.c @@ -2317,9 +2317,9 @@ yuv2gbrp_full_X_c(SwsInternal *c, const int16_t *lumFilter, Y -= c->yuv2rgb_y_offset; Y *= c->yuv2rgb_y_coeff; Y += 1 << (SH-1); - R = Y + V * c->yuv2rgb_v2r_coeff; - G = Y + V * c->yuv2rgb_v2g_coeff + U * c->yuv2rgb_u2g_coeff; - B = Y + U * c->yuv2rgb_u2b_coeff; + R = Y + V * (unsigned)c->yuv2rgb_v2r_coeff; + G = Y + V * (unsigned)c->yuv2rgb_v2g_coeff + U * (unsigned)c->yuv2rgb_u2g_coeff; + B = Y + U * (unsigned)c->yuv2rgb_u2b_coeff; if ((R | G | B) & 0xC0000000) { R = av_clip_uintp2(R, 30); _______________________________________________ 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".
