xorg-x11-server/0001-xkb-switch-to-array-index-loops-to-moving-pointers.patch
Olivier Fourdan e1f8d8cc41 Fix CVE-2022-2319/ZDI-CAN-16062, CVE-2022-2320/ZDI-CAN-16070
Resolves: rhbz#2108157, rhbz#2108162
2022-07-29 10:25:05 +02:00

78 lines
3.1 KiB
Diff

From c9b379ec5a1a34692af06056925bd0fc5f809713 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Tue, 5 Jul 2022 12:40:47 +1000
Subject: [PATCH xserver 1/3] xkb: switch to array index loops to moving
pointers
Most similar loops here use a pointer that advances with each loop
iteration, let's do the same here for consistency.
No functional changes.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Olivier Fourdan <ofourdan@redhat.com>
(cherry picked from commit f1070c01d616c5f21f939d5ebc533738779451ac)
---
xkb/xkb.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/xkb/xkb.c b/xkb/xkb.c
index d056c698c..684394d77 100644
--- a/xkb/xkb.c
+++ b/xkb/xkb.c
@@ -5372,16 +5372,16 @@ _CheckSetSections(XkbGeometryPtr geom,
row->left = rWire->left;
row->vertical = rWire->vertical;
kWire = (xkbKeyWireDesc *) &rWire[1];
- for (k = 0; k < rWire->nKeys; k++) {
+ for (k = 0; k < rWire->nKeys; k++, kWire++) {
XkbKeyPtr key;
key = XkbAddGeomKey(row);
if (!key)
return BadAlloc;
- memcpy(key->name.name, kWire[k].name, XkbKeyNameLength);
- key->gap = kWire[k].gap;
- key->shape_ndx = kWire[k].shapeNdx;
- key->color_ndx = kWire[k].colorNdx;
+ memcpy(key->name.name, kWire->name, XkbKeyNameLength);
+ key->gap = kWire->gap;
+ key->shape_ndx = kWire->shapeNdx;
+ key->color_ndx = kWire->colorNdx;
if (key->shape_ndx >= geom->num_shapes) {
client->errorValue = _XkbErrCode3(0x10, key->shape_ndx,
geom->num_shapes);
@@ -5393,7 +5393,7 @@ _CheckSetSections(XkbGeometryPtr geom,
return BadMatch;
}
}
- rWire = (xkbRowWireDesc *) &kWire[rWire->nKeys];
+ rWire = (xkbRowWireDesc *)kWire;
}
wire = (char *) rWire;
if (sWire->nDoodads > 0) {
@@ -5458,16 +5458,16 @@ _CheckSetShapes(XkbGeometryPtr geom,
return BadAlloc;
ol->corner_radius = olWire->cornerRadius;
ptWire = (xkbPointWireDesc *) &olWire[1];
- for (p = 0, pt = ol->points; p < olWire->nPoints; p++, pt++) {
- pt->x = ptWire[p].x;
- pt->y = ptWire[p].y;
+ for (p = 0, pt = ol->points; p < olWire->nPoints; p++, pt++, ptWire++) {
+ pt->x = ptWire->x;
+ pt->y = ptWire->y;
if (client->swapped) {
swaps(&pt->x);
swaps(&pt->y);
}
}
ol->num_points = olWire->nPoints;
- olWire = (xkbOutlineWireDesc *) (&ptWire[olWire->nPoints]);
+ olWire = (xkbOutlineWireDesc *)ptWire;
}
if (shapeWire->primaryNdx != XkbNoShape)
shape->primary = &shape->outlines[shapeWire->primaryNdx];
--
2.36.1