1 files changed, 53 insertions, 0 deletions

diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2022-35414.patch b/meta/recipes-devtools/qemu/qemu/CVE-2022-35414.patch
new file mode 100644
index 0000000000..4196ebcf98
--- /dev/null
+++ b/meta/recipes-devtools/qemu/qemu/CVE-2022-35414.patch
@@ -0,0 +1,53 @@
+From 09a07b5b39c87423df9e8f6574c19a14d36beac5 Mon Sep 17 00:00:00 2001
+From: Hitendra Prajapati <hprajapati@mvista.com>
+Date: Wed, 27 Jul 2022 10:34:12 +0530
+Subject: [PATCH] CVE-2022-35414
+
+Upstream-Status: Backport [https://github.com/qemu/qemu/commit/418ade7849ce7641c0f7333718caf5091a02fd4c]
+CVE: CVE-2022-35414
+Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
+---
+ exec.c | 13 ++++++++++++-
+ 1 file changed, 12 insertions(+), 1 deletion(-)
+
+diff --git a/exec.c b/exec.c
+index 43c70ffb..2d6add46 100644
+--- a/exec.c
++++ b/exec.c
+@@ -685,7 +685,7 @@ static void tcg_iommu_free_notifier_list(CPUState *cpu)
+ 
+ /* Called from RCU critical section */
+ MemoryRegionSection *
+-address_space_translate_for_iotlb(CPUState *cpu, int asidx, hwaddr addr,
++address_space_translate_for_iotlb(CPUState *cpu, int asidx, hwaddr orig_addr,
+                                   hwaddr *xlat, hwaddr *plen,
+                                   MemTxAttrs attrs, int *prot)
+ {
+@@ -694,6 +694,7 @@ address_space_translate_for_iotlb(CPUState *cpu, int asidx, hwaddr addr,
+     IOMMUMemoryRegionClass *imrc;
+     IOMMUTLBEntry iotlb;
+     int iommu_idx;
++    hwaddr addr = orig_addr;
+     AddressSpaceDispatch *d = atomic_rcu_read(&cpu->cpu_ases[asidx].memory_dispatch);
+ 
+     for (;;) {
+@@ -737,6 +738,16 @@ address_space_translate_for_iotlb(CPUState *cpu, int asidx, hwaddr addr,
+     return section;
+ 
+ translate_fail:
++    /*
++     * We should be given a page-aligned address -- certainly
++     * tlb_set_page_with_attrs() does so.  The page offset of xlat
++     * is used to index sections[], and PHYS_SECTION_UNASSIGNED = 0.
++     * The page portion of xlat will be logged by memory_region_access_valid()
++     * when this memory access is rejected, so use the original untranslated
++     * physical address.
++     */
++    assert((orig_addr & ~TARGET_PAGE_MASK) == 0);
++    *xlat = orig_addr;
+     return &d->map.sections[PHYS_SECTION_UNASSIGNED];
+ }
+ #endif
+-- 
+2.25.1
+