new file mode 100644
@@ -0,0 +1,120 @@
+From bba9df1a9d57234c76c0b93f88dacb143d01bca2 Mon Sep 17 00:00:00 2001
+From: Olivier Fourdan <ofourdan@redhat.com>
+Date: Mon, 16 Dec 2024 11:25:11 +0100
+Subject: [PATCH] Xi: Fix barrier device search
+
+The function GetBarrierDevice() would search for the pointer device
+based on its device id and return the matching value, or supposedly NULL
+if no match was found.
+
+Unfortunately, as written, it would return the last element of the list
+if no matching device id was found which can lead to out of bounds
+memory access.
+
+Fix the search function to return NULL if not matching device is found,
+and adjust the callers to handle the case where the device cannot be
+found.
+
+CVE-2025-26598, ZDI-CAN-25740
+
+This vulnerability was discovered by:
+Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
+
+Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
+Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
+Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1828>
+
+Upstream-Status: Backport [https://gitlab.freedesktop.org/xorg/xserver/-/commit/bba9df1a]
+CVE: CVE-2025-26598
+Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
+---
+ Xi/xibarriers.c | 27 +++++++++++++++++++++++----
+ 1 file changed, 23 insertions(+), 4 deletions(-)
+
+diff --git a/Xi/xibarriers.c b/Xi/xibarriers.c
+index 700b2b8c53..6761bcb49a 100644
+--- a/Xi/xibarriers.c
++++ b/Xi/xibarriers.c
+@@ -132,14 +132,15 @@ static void FreePointerBarrierClient(struct PointerBarrierClient *c)
+
+ static struct PointerBarrierDevice *GetBarrierDevice(struct PointerBarrierClient *c, int deviceid)
+ {
+- struct PointerBarrierDevice *pbd = NULL;
++ struct PointerBarrierDevice *p, *pbd = NULL;
+
+- xorg_list_for_each_entry(pbd, &c->per_device, entry) {
+- if (pbd->deviceid == deviceid)
++ xorg_list_for_each_entry(p, &c->per_device, entry) {
++ if (p->deviceid == deviceid) {
++ pbd = p;
+ break;
++ }
+ }
+
+- BUG_WARN(!pbd);
+ return pbd;
+ }
+
+@@ -340,6 +341,9 @@ barrier_find_nearest(BarrierScreenPtr cs, DeviceIntPtr dev,
+ double distance;
+
+ pbd = GetBarrierDevice(c, dev->id);
++ if (!pbd)
++ continue;
++
+ if (pbd->seen)
+ continue;
+
+@@ -448,6 +452,9 @@ input_constrain_cursor(DeviceIntPtr dev, ScreenPtr screen,
+ nearest = &c->barrier;
+
+ pbd = GetBarrierDevice(c, master->id);
++ if (!pbd)
++ continue;
++
+ new_sequence = !pbd->hit;
+
+ pbd->seen = TRUE;
+@@ -488,6 +495,9 @@ input_constrain_cursor(DeviceIntPtr dev, ScreenPtr screen,
+ int flags = 0;
+
+ pbd = GetBarrierDevice(c, master->id);
++ if (!pbd)
++ continue;
++
+ pbd->seen = FALSE;
+ if (!pbd->hit)
+ continue;
+@@ -682,6 +692,9 @@ BarrierFreeBarrier(void *data, XID id)
+ continue;
+
+ pbd = GetBarrierDevice(c, dev->id);
++ if (!pbd)
++ continue;
++
+ if (!pbd->hit)
+ continue;
+
+@@ -741,6 +754,8 @@ static void remove_master_func(void *res, XID id, void *devid)
+ barrier = container_of(b, struct PointerBarrierClient, barrier);
+
+ pbd = GetBarrierDevice(barrier, *deviceid);
++ if (!pbd)
++ return;
+
+ if (pbd->hit) {
+ BarrierEvent ev = {
+@@ -905,6 +920,10 @@ ProcXIBarrierReleasePointer(ClientPtr client)
+ barrier = container_of(b, struct PointerBarrierClient, barrier);
+
+ pbd = GetBarrierDevice(barrier, dev->id);
++ if (!pbd) {
++ client->errorValue = dev->id;
++ return BadDevice;
++ }
+
+ if (pbd->barrier_event_id == event_id)
+ pbd->release_event_id = event_id;
+--
+GitLab
+
@@ -16,6 +16,7 @@ SRC_URI = "https://www.x.org/archive/individual/xserver/xwayland-${PV}.tar.xz \
file://CVE-2025-26595.patch \
file://CVE-2025-26596.patch \
file://CVE-2025-26597.patch \
+ file://CVE-2025-26598.patch \
"
SRC_URI[sha256sum] = "33ec7ff2687a59faaa52b9b09aa8caf118e7ecb6aed8953f526a625ff9f4bd90"