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commit 241530f9be1efdc90b2db030256879a75ab4d56a Author: Michael Niedermayer <[email protected]> AuthorDate: Tue Mar 3 20:56:31 2026 +0100 Commit: Michael Niedermayer <[email protected]> CommitDate: Tue May 5 18:55:06 2026 +0200 swscale/output: Fix integer overflow in alpha in yuv2rgba64_1_c_template() Fixes: signed integer overflow: -1548257 * 2048 cannot be represented in type 'int' Fixes: #21592 Found-by: HAORAN FANG Signed-off-by: Michael Niedermayer <[email protected]> (cherry picked from commit 1e63151355342228584e30dab2c53a2cb0d19b42) 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 d7bd0b941f..34530b6365 100644 --- a/libswscale/output.c +++ b/libswscale/output.c @@ -1147,7 +1147,7 @@ yuv2rgba64_1_c_template(SwsContext *c, const int32_t *buf0, { const int32_t *ubuf0 = ubuf[0], *vbuf0 = vbuf[0]; int i; - int A1 = 0xffff<<14, A2= 0xffff<<14; + SUINT A1 = 0xffff<<14, A2= 0xffff<<14; if (uvalpha < 2048) { for (i = 0; i < ((dstW + 1) >> 1); i++) { @@ -1165,8 +1165,8 @@ yuv2rgba64_1_c_template(SwsContext *c, const int32_t *buf0, Y2 += (1 << 13) - (1 << 29); if (hasAlpha) { - A1 = abuf0[i * 2 ] * (1 << 11); - A2 = abuf0[i * 2 + 1] * (1 << 11); + A1 = abuf0[i * 2 ] * (SUINT)(1 << 11); + A2 = abuf0[i * 2 + 1] * (SUINT)(1 << 11); A1 += 1 << 13; A2 += 1 << 13; _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
