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Unvalidated lengths

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v2: Add overflow check and remove unnecessary check (Julien Cristau)

This addresses:
CVE-2017-12184 in XINERAMA
CVE-2017-12185 in MIT-SCREEN-SAVER
CVE-2017-12186 in X-Resource
CVE-2017-12187 in RENDER

Reviewed-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Nathan Kidd <nkidd@opentext.com>
Signed-off-by: Julien Cristau <jcristau@debian.org>
This commit is contained in:
Nathan Kidd
2015-01-09 09:57:23 -05:00
committed by Julien Cristau
parent 9c23685009
commit cad5a1050b
7 changed files with 17 additions and 4 deletions
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3
pseudoramiX/pseudoramiX.c
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@@ -297,10 +297,11 @@ ProcPseudoramiXGetScreenSize(ClientPtr client)
TRACE;
REQUEST_SIZE_MATCH(xPanoramiXGetScreenSizeReq);
if (stuff->screen >= pseudoramiXNumScreens)
return BadMatch;
REQUEST_SIZE_MATCH(xPanoramiXGetScreenSizeReq);
rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
if (rc != Success)
return rc;