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-rw-r--r--nx-X11/programs/Xserver/Xext/EVI.c15
-rw-r--r--nx-X11/programs/Xserver/Xext/cup.c3
-rw-r--r--nx-X11/programs/Xserver/Xext/sampleEVI.c29
-rw-r--r--nx-X11/programs/Xserver/Xext/security.c10
-rw-r--r--nx-X11/programs/Xserver/Xext/security.c.NX.original10
-rw-r--r--nx-X11/programs/Xserver/Xext/security.c.X.original6
-rw-r--r--nx-X11/programs/Xserver/Xext/shm.c50
7 files changed, 96 insertions, 27 deletions
diff --git a/nx-X11/programs/Xserver/Xext/EVI.c b/nx-X11/programs/Xserver/Xext/EVI.c
index b59180685..93ed19fa6 100644
--- a/nx-X11/programs/Xserver/Xext/EVI.c
+++ b/nx-X11/programs/Xserver/Xext/EVI.c
@@ -36,6 +36,7 @@ THE USE OR PERFORMANCE OF THIS SOFTWARE.
#include <X11/extensions/XEVIstr.h>
#include "EVIstruct.h"
#include "modinit.h"
+#include "scrnintstr.h"
#if 0
static unsigned char XEVIReqCode = 0;
@@ -89,10 +90,22 @@ ProcEVIGetVisualInfo(ClientPtr client)
{
REQUEST(xEVIGetVisualInfoReq);
xEVIGetVisualInfoReply rep;
- int n, n_conflict, n_info, sz_info, sz_conflict;
+ int i, n, n_conflict, n_info, sz_info, sz_conflict;
VisualID32 *conflict;
+ unsigned int total_visuals = 0;
xExtendedVisualInfo *eviInfo;
int status;
+
+ /*
+ * do this first, otherwise REQUEST_FIXED_SIZE can overflow. we assume
+ * here that you don't have more than 2^32 visuals over all your screens;
+ * this seems like a safe assumption.
+ */
+ for (i = 0; i < screenInfo.numScreens; i++)
+ total_visuals += screenInfo.screens[i]->numVisuals;
+ if (stuff->n_visual > total_visuals)
+ return BadValue;
+
REQUEST_FIXED_SIZE(xEVIGetVisualInfoReq, stuff->n_visual * sz_VisualID32);
status = eviPriv->getVisualInfo((VisualID32 *)&stuff[1], (int)stuff->n_visual,
&eviInfo, &n_info, &conflict, &n_conflict);
diff --git a/nx-X11/programs/Xserver/Xext/cup.c b/nx-X11/programs/Xserver/Xext/cup.c
index 4db62cf15..198aa801f 100644
--- a/nx-X11/programs/Xserver/Xext/cup.c
+++ b/nx-X11/programs/Xserver/Xext/cup.c
@@ -202,6 +202,9 @@ int ProcGetReservedColormapEntries(
REQUEST_SIZE_MATCH (xXcupGetReservedColormapEntriesReq);
+ if (stuff->screen >= screenInfo.numScreens)
+ return BadValue;
+
#ifndef HAVE_SPECIAL_DESKTOP_COLORS
citems[CUP_BLACK_PIXEL].pixel =
screenInfo.screens[stuff->screen]->blackPixel;
diff --git a/nx-X11/programs/Xserver/Xext/sampleEVI.c b/nx-X11/programs/Xserver/Xext/sampleEVI.c
index 67caa5613..500a585c9 100644
--- a/nx-X11/programs/Xserver/Xext/sampleEVI.c
+++ b/nx-X11/programs/Xserver/Xext/sampleEVI.c
@@ -36,6 +36,13 @@ THE USE OR PERFORMANCE OF THIS SOFTWARE.
#include <X11/extensions/XEVIstr.h>
#include "EVIstruct.h"
#include "scrnintstr.h"
+
+#if HAVE_STDINT_H
+#include <stdint.h>
+#elif !defined(UINT32_MAX)
+#define UINT32_MAX 0xffffffffU
+#endif
+
static int sampleGetVisualInfo(
VisualID32 *visual,
int n_visual,
@@ -44,24 +51,36 @@ static int sampleGetVisualInfo(
VisualID32 **conflict_rn,
int *n_conflict_rn)
{
- int max_sz_evi = n_visual * sz_xExtendedVisualInfo * screenInfo.numScreens;
+ unsigned int max_sz_evi;
VisualID32 *temp_conflict;
xExtendedVisualInfo *evi;
- int max_visuals = 0, max_sz_conflict, sz_conflict = 0;
+ unsigned int max_visuals = 0, max_sz_conflict, sz_conflict = 0;
register int visualI, scrI, sz_evi = 0, conflictI, n_conflict;
- *evi_rn = evi = (xExtendedVisualInfo *)xalloc(max_sz_evi);
- if (!*evi_rn)
- return BadAlloc;
+
+ if (n_visual > UINT32_MAX/(sz_xExtendedVisualInfo * screenInfo.numScreens))
+ return BadAlloc;
+ max_sz_evi = n_visual * sz_xExtendedVisualInfo * screenInfo.numScreens;
+
for (scrI = 0; scrI < screenInfo.numScreens; scrI++) {
if (screenInfo.screens[scrI]->numVisuals > max_visuals)
max_visuals = screenInfo.screens[scrI]->numVisuals;
}
+
+ if (n_visual > UINT32_MAX/(sz_VisualID32 * screenInfo.numScreens
+ * max_visuals))
+ return BadAlloc;
max_sz_conflict = n_visual * sz_VisualID32 * screenInfo.numScreens * max_visuals;
+
+ *evi_rn = evi = (xExtendedVisualInfo *)xalloc(max_sz_evi);
+ if (!*evi_rn)
+ return BadAlloc;
+
temp_conflict = (VisualID32 *)xalloc(max_sz_conflict);
if (!temp_conflict) {
xfree(*evi_rn);
return BadAlloc;
}
+
for (scrI = 0; scrI < screenInfo.numScreens; scrI++) {
for (visualI = 0; visualI < n_visual; visualI++) {
evi[sz_evi].core_visual_id = visual[visualI];
diff --git a/nx-X11/programs/Xserver/Xext/security.c b/nx-X11/programs/Xserver/Xext/security.c
index f37be696b..cee89354a 100644
--- a/nx-X11/programs/Xserver/Xext/security.c
+++ b/nx-X11/programs/Xserver/Xext/security.c
@@ -1822,11 +1822,11 @@ SecurityLoadPropertyAccessList(void)
#ifdef NXAGENT_SERVER
- f = fopen(_NXGetPolicyFilePath(SecurityPolicyFile), "r");
+ f = Fopen(_NXGetPolicyFilePath(SecurityPolicyFile), "r");
#else
- f = fopen(SecurityPolicyFile, "r");
+ f = Fopen(SecurityPolicyFile, "r");
#endif
@@ -1834,11 +1834,11 @@ SecurityLoadPropertyAccessList(void)
#ifdef NXAGENT_SERVER
- f = fopen((char*)__XOS2RedirRoot( _NXGetPolicyFilePath(SecurityPolicyFile)), "r");
+ f = Fopen((char*)__XOS2RedirRoot( _NXGetPolicyFilePath(SecurityPolicyFile)), "r");
#else
- f = fopen((char*)__XOS2RedirRoot(SecurityPolicyFile), "r");
+ f = Fopen((char*)__XOS2RedirRoot(SecurityPolicyFile), "r");
#endif
@@ -1960,7 +1960,7 @@ SecurityLoadPropertyAccessList(void)
}
#endif /* PROPDEBUG */
- fclose(f);
+ Fclose(f);
} /* SecurityLoadPropertyAccessList */
diff --git a/nx-X11/programs/Xserver/Xext/security.c.NX.original b/nx-X11/programs/Xserver/Xext/security.c.NX.original
index f37be696b..cee89354a 100644
--- a/nx-X11/programs/Xserver/Xext/security.c.NX.original
+++ b/nx-X11/programs/Xserver/Xext/security.c.NX.original
@@ -1822,11 +1822,11 @@ SecurityLoadPropertyAccessList(void)
#ifdef NXAGENT_SERVER
- f = fopen(_NXGetPolicyFilePath(SecurityPolicyFile), "r");
+ f = Fopen(_NXGetPolicyFilePath(SecurityPolicyFile), "r");
#else
- f = fopen(SecurityPolicyFile, "r");
+ f = Fopen(SecurityPolicyFile, "r");
#endif
@@ -1834,11 +1834,11 @@ SecurityLoadPropertyAccessList(void)
#ifdef NXAGENT_SERVER
- f = fopen((char*)__XOS2RedirRoot( _NXGetPolicyFilePath(SecurityPolicyFile)), "r");
+ f = Fopen((char*)__XOS2RedirRoot( _NXGetPolicyFilePath(SecurityPolicyFile)), "r");
#else
- f = fopen((char*)__XOS2RedirRoot(SecurityPolicyFile), "r");
+ f = Fopen((char*)__XOS2RedirRoot(SecurityPolicyFile), "r");
#endif
@@ -1960,7 +1960,7 @@ SecurityLoadPropertyAccessList(void)
}
#endif /* PROPDEBUG */
- fclose(f);
+ Fclose(f);
} /* SecurityLoadPropertyAccessList */
diff --git a/nx-X11/programs/Xserver/Xext/security.c.X.original b/nx-X11/programs/Xserver/Xext/security.c.X.original
index 26c842855..765769a7c 100644
--- a/nx-X11/programs/Xserver/Xext/security.c.X.original
+++ b/nx-X11/programs/Xserver/Xext/security.c.X.original
@@ -1647,9 +1647,9 @@ SecurityLoadPropertyAccessList(void)
return;
#ifndef __UNIXOS2__
- f = fopen(SecurityPolicyFile, "r");
+ f = Fopen(SecurityPolicyFile, "r");
#else
- f = fopen((char*)__XOS2RedirRoot(SecurityPolicyFile), "r");
+ f = Fopen((char*)__XOS2RedirRoot(SecurityPolicyFile), "r");
#endif
if (!f)
{
@@ -1733,7 +1733,7 @@ SecurityLoadPropertyAccessList(void)
}
#endif /* PROPDEBUG */
- fclose(f);
+ Fclose(f);
} /* SecurityLoadPropertyAccessList */
diff --git a/nx-X11/programs/Xserver/Xext/shm.c b/nx-X11/programs/Xserver/Xext/shm.c
index 806008c60..e2cf8cd24 100644
--- a/nx-X11/programs/Xserver/Xext/shm.c
+++ b/nx-X11/programs/Xserver/Xext/shm.c
@@ -728,6 +728,8 @@ ProcPanoramiXShmCreatePixmap(
int i, j, result;
ShmDescPtr shmdesc;
REQUEST(xShmCreatePixmapReq);
+ unsigned int width, height, depth;
+ unsigned long size;
PanoramiXRes *newPix;
REQUEST_SIZE_MATCH(xShmCreatePixmapReq);
@@ -737,11 +739,18 @@ ProcPanoramiXShmCreatePixmap(
LEGAL_NEW_RESOURCE(stuff->pid, client);
VERIFY_GEOMETRABLE(pDraw, stuff->drawable, client);
VERIFY_SHMPTR(stuff->shmseg, stuff->offset, TRUE, shmdesc, client);
- if (!stuff->width || !stuff->height)
+
+ width = stuff->width;
+ height = stuff->height;
+ depth = stuff->depth;
+ if (!width || !height || !depth)
{
client->errorValue = 0;
return BadValue;
}
+ if (width > 32767 || height > 32767)
+ return BadAlloc;
+
if (stuff->depth != 1)
{
pDepth = pDraw->pScreen->allowedDepths;
@@ -751,10 +760,18 @@ ProcPanoramiXShmCreatePixmap(
client->errorValue = stuff->depth;
return BadValue;
}
+
CreatePmap:
- VERIFY_SHMSIZE(shmdesc, stuff->offset,
- PixmapBytePad(stuff->width, stuff->depth) * stuff->height,
- client);
+ size = PixmapBytePad(width, depth) * height;
+ if (sizeof(size) == 4 && BitsPerPixel(depth) > 8) {
+ if (size < width * height)
+ return BadAlloc;
+ /* thankfully, offset is unsigned */
+ if (stuff->offset + size < size)
+ return BadAlloc;
+ }
+
+ VERIFY_SHMSIZE(shmdesc, stuff->offset, size, client);
if(!(newPix = (PanoramiXRes *) xalloc(sizeof(PanoramiXRes))))
return BadAlloc;
@@ -1052,6 +1069,8 @@ ProcShmCreatePixmap(client)
register int i;
ShmDescPtr shmdesc;
REQUEST(xShmCreatePixmapReq);
+ unsigned int width, height, depth;
+ unsigned long size;
REQUEST_SIZE_MATCH(xShmCreatePixmapReq);
client->errorValue = stuff->pid;
@@ -1060,11 +1079,18 @@ ProcShmCreatePixmap(client)
LEGAL_NEW_RESOURCE(stuff->pid, client);
VERIFY_GEOMETRABLE(pDraw, stuff->drawable, client);
VERIFY_SHMPTR(stuff->shmseg, stuff->offset, TRUE, shmdesc, client);
- if (!stuff->width || !stuff->height)
+
+ width = stuff->width;
+ height = stuff->height;
+ depth = stuff->depth;
+ if (!width || !height || !depth)
{
client->errorValue = 0;
return BadValue;
}
+ if (width > 32767 || height > 32767)
+ return BadAlloc;
+
if (stuff->depth != 1)
{
pDepth = pDraw->pScreen->allowedDepths;
@@ -1074,10 +1100,18 @@ ProcShmCreatePixmap(client)
client->errorValue = stuff->depth;
return BadValue;
}
+
CreatePmap:
- VERIFY_SHMSIZE(shmdesc, stuff->offset,
- PixmapBytePad(stuff->width, stuff->depth) * stuff->height,
- client);
+ size = PixmapBytePad(width, depth) * height;
+ if (sizeof(size) == 4 && BitsPerPixel(depth) > 8) {
+ if (size < width * height)
+ return BadAlloc;
+ /* thankfully, offset is unsigned */
+ if (stuff->offset + size < size)
+ return BadAlloc;
+ }
+
+ VERIFY_SHMSIZE(shmdesc, stuff->offset, size, client);
pMap = (*shmFuncs[pDraw->pScreen->myNum]->CreatePixmap)(
pDraw->pScreen, stuff->width,
stuff->height, stuff->depth,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 20:19:54 +0000