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openSUSE:Step:15-SP2
xorg-x11-server.31901
U_FixForZDI-11426.patch
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File U_FixForZDI-11426.patch of Package xorg-x11-server.31901
Avoid leaking un-initalized memory to clients by zeroing the whole pixmap on initial allocation. This vulnerability was discovered by: Jan-Niklas Sohn working with Trend Micro Zero Day Initiative Signed-off-by: Matthieu Herrb <matthieu@herrb.eu> --- dix/pixmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/dix/pixmap.c b/dix/pixmap.c index 1186d7dbb..5a0146bbb 100644 --- a/dix/pixmap.c +++ b/dix/pixmap.c @@ -116,7 +116,7 @@ AllocatePixmap(ScreenPtr pScreen, int pixDataSize) if (pScreen->totalPixmapSize > ((size_t) - 1) - pixDataSize) return NullPixmap; - pPixmap = malloc(pScreen->totalPixmapSize + pixDataSize); + pPixmap = calloc(1, pScreen->totalPixmapSize + pixDataSize); if (!pPixmap) return NullPixmap;
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