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Destroying RandR crtc or output overwrites memory.

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RRCrtcDestroyResource and RROutputDestroyResource had matching
bugs that would overwrite memory past the end of the storage
of the crtc or output arrays. Oops.
This commit is contained in:
Keith Packard 2006-11-27 21:40:24 -08:00
parent ec83d67416
commit 4202b23ed8
2 changed files with 2 additions and 2 deletions
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2
randr/rrcrtc.c
View file

@ -344,7 +344,7 @@ RRCrtcDestroyResource (pointer value, XID pid)
if (pScrPriv->crtcs[i] == crtc)
{
memmove (pScrPriv->crtcs + i, pScrPriv->crtcs + i + 1,
(pScrPriv->numCrtcs - (i - 1)) * sizeof (RRCrtcPtr));
(pScrPriv->numCrtcs - (i + 1)) * sizeof (RRCrtcPtr));
--pScrPriv->numCrtcs;
break;
}

2
randr/rroutput.c
View file

@ -327,7 +327,7 @@ RROutputDestroyResource (pointer value, XID pid)
if (pScrPriv->outputs[i] == output)
{
memmove (pScrPriv->outputs + i, pScrPriv->outputs + i + 1,
(pScrPriv->numOutputs - (i - 1)) * sizeof (RROutputPtr));
(pScrPriv->numOutputs - (i + 1)) * sizeof (RROutputPtr));
--pScrPriv->numOutputs;
break;
}