Integer overflow in the createbits function in pixman-bits-image.c in Pixman before 0.32.6 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via large height and stride values.

An integer overflow issue has been reported in the generalcompositerect() function in pixman prior to version 0.32.8. An attacker could exploit this issue to cause an application using pixman to crash or, potentially, execute arbitrary code.

In libpixman in Pixman before 0.42.2, there is an out-of-bounds write (aka heap-based buffer overflow) in rasterizeedges8 due to an integer overflow in pixmansamplefloory.

stress-test master commit e4c878 was discovered to contain a FPE vulnerability via the component combineinner at /pixman-combine-float.c.

Integer underflow in the pixmantrapezoidvalid macro in pixman.h in Pixman before 0.32.0, as used in X.Org server and cairo, allows context-dependent attackers to cause a denial of service (crash) via a negative bottom value.

Integer underflow in the xTrapezoidValid macro in render/picture.h in X.Org allows context-dependent attackers to cause a denial of service (crash) via a negative bottom value.