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The following commit(s) were added to refs/heads/master by this push:
new d41b8d95a7 swscale/output: Use 64bit in addition in
yuv2gbrp16_full_X_c() for RGB + Y
d41b8d95a7 is described below
commit d41b8d95a7234cf0b34fcb84e307385fb3ef30a1
Author: Michael Niedermayer <[email protected]>
AuthorDate: Mon Dec 22 23:44:54 2025 +0100
Commit: michaelni <[email protected]>
CommitDate: Tue Dec 23 09:14:44 2025 +0000
swscale/output: Use 64bit in addition in yuv2gbrp16_full_X_c() for RGB + Y
Fixes: signed integer overflow: -1159988356 + -1082982400 cannot be
represented in type 'int'
Fixes:
461519938/clusterfuzz-testcase-minimized-ffmpeg_SWS_fuzzer-4777382021234688
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <[email protected]>
---
libswscale/output.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/libswscale/output.c b/libswscale/output.c
index 4b3aab3109..a3b8da54bf 100644
--- a/libswscale/output.c
+++ b/libswscale/output.c
@@ -2513,9 +2513,9 @@ yuv2gbrp16_full_X_c(SwsInternal *c, const int16_t
*lumFilter,
G = V * c->yuv2rgb_v2g_coeff + U * c->yuv2rgb_u2g_coeff;
B = U * c->yuv2rgb_u2b_coeff;
- dest16[2][i] = av_clip_uintp2(((Y + R) >> 14) + (1<<15), 16);
- dest16[0][i] = av_clip_uintp2(((Y + G) >> 14) + (1<<15), 16);
- dest16[1][i] = av_clip_uintp2(((Y + B) >> 14) + (1<<15), 16);
+ dest16[2][i] = av_clip_uintp2(((Y + (int64_t)R) >> 14) + (1<<15), 16);
+ dest16[0][i] = av_clip_uintp2(((Y + (int64_t)G) >> 14) + (1<<15), 16);
+ dest16[1][i] = av_clip_uintp2(((Y + (int64_t)B) >> 14) + (1<<15), 16);
if (hasAlpha)
dest16[3][i] = av_clip_uintp2(A, 30) >> 14;
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