[OE-core][wrynose][PATCH 2/3] qemu: Fix CVE-2026-0665

["Ashishkumar Parmar X (asparmar - E INFOCHIPS PRIVATE LIMITED at Cisco)" <asparmar@cisco.com>]

From: Ashishkumar Parmar <asparmar@cisco.com>

This patch applies the upstream stable-10.2 backport for CVE-2026-0665.
The upstream fix commit is referenced in [1], and the public CVE advisory
is referenced in [2].

[1] https://gitlab.com/qemu-project/qemu/-/commit/058e1774d678031ec207441a51efcf8ae94cc6af
[2] https://github.com/advisories/GHSA-4pq4-6gr5-cr69

Signed-off-by: Ashishkumar Parmar <asparmar@cisco.com>
---
 meta/recipes-devtools/qemu/qemu.inc           |  1 +
 .../qemu/qemu/CVE-2026-0665.patch             | 38 +++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2026-0665.patch

diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc
index 1d493ee1a3..518ef69789 100644
--- a/meta/recipes-devtools/qemu/qemu.inc
+++ b/meta/recipes-devtools/qemu/qemu.inc
@@ -38,6 +38,7 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \
            file://qemu-guest-agent.udev \
            file://CVE-2024-6519.patch \
            file://CVE-2026-2243.patch \
+           file://CVE-2026-0665.patch \
            "
 # file index at download.qemu.org isn't reliable: https://gitlab.com/qemu-project/qemu-web/-/issues/9
 UPSTREAM_CHECK_URI = "https://www.qemu.org"
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2026-0665.patch b/meta/recipes-devtools/qemu/qemu/CVE-2026-0665.patch
new file mode 100644
index 0000000000..ed8623c225
--- /dev/null
+++ b/meta/recipes-devtools/qemu/qemu/CVE-2026-0665.patch
@@ -0,0 +1,38 @@
+From 77705f3f91dc1ede803228a0eaf4593103466e3a Mon Sep 17 00:00:00 2001
+From: Vulnerability Report <vr@darknavy.com>
+Date: Fri, 9 Jan 2026 10:35:48 +0800
+Subject: [PATCH] hw/i386/kvm: fix PIRQ bounds check in xen_physdev_map_pirq()
+
+Reject pirq == s->nr_pirqs in xen_physdev_map_pirq().
+
+CVE: CVE-2026-0665
+Upstream-Status: Backport [https://gitlab.com/qemu-project/qemu/-/commit/058e1774d678031ec207441a51efcf8ae94cc6af]
+
+Fixes: aa98ee38a5 ("hw/xen: Implement emulated PIRQ hypercall support")
+Fixes: CVE-2026-0665
+Reported-by: DARKNAVY (@DarkNavyOrg) <vr@darknavy.com>
+Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
+Signed-off-by: Vulnerability Report <vr@darknavy.com>
+Link: https://lore.kernel.org/r/13FE03BE60EA78D6+20260109023548.4047-1-vr@darknavy.com
+Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
+(cherry picked from commit c7504ba2a560fd884557f6e5142f03b491aad0c7)
+Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
+(cherry picked from commit 058e1774d678031ec207441a51efcf8ae94cc6af)
+Signed-off-by: Ashishkumar Parmar <asparmar@cisco.com>
+---
+ hw/i386/kvm/xen_evtchn.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c
+index dd566c496..173e0818c 100644
+--- a/hw/i386/kvm/xen_evtchn.c
++++ b/hw/i386/kvm/xen_evtchn.c
+@@ -1877,7 +1877,7 @@ int xen_physdev_map_pirq(struct physdev_map_pirq *map)
+             return pirq;
+         }
+         map->pirq = pirq;
+-    } else if (pirq > s->nr_pirqs) {
++    } else if (pirq >= s->nr_pirqs) {
+         return -EINVAL;
+     } else {
+         /*
-- 
2.35.6