[poppler] poppler/SplashOutputDev.cc

[GitLab Mirror]

 poppler/SplashOutputDev.cc |    4 ++++
 1 file changed, 4 insertions(+)

New commits:
commit ac9e14b9eca50ec3ff25b2cdb4c97e3728ff1f47
Author: Albert Astals Cid <aacid at kde.org>
Date:   Sat Dec 12 19:25:41 2020 +0100

    SplashOutputDev: Fix crash on broken files
    
    oss-fuzz/28582

diff --git a/poppler/SplashOutputDev.cc b/poppler/SplashOutputDev.cc
index 065dd5ff..403c596b 100644
--- a/poppler/SplashOutputDev.cc
+++ b/poppler/SplashOutputDev.cc
@@ -2717,6 +2717,10 @@ void SplashOutputDev::unsetSoftMaskFromImageMask(GfxState *state, double *baseMa
 {
     double bbox[4] = { 0, 0, 1, 1 }; // dummy
 
+    if (!transpGroupStack) {
+        return;
+    }
+
     /* transfer mask to alpha channel! */
     // memcpy(maskBitmap->getAlphaPtr(), maskBitmap->getDataPtr(), bitmap->getRowSize() * bitmap->getHeight());
     // memset(maskBitmap->getDataPtr(), 0, bitmap->getRowSize() * bitmap->getHeight());