diff options
| author |   Hitendra Prajapati <hprajapati@mvista.com> | 2022-07-27 13:25:44 +0530 |
|---|---|---|
| committer |   Steve Sakoman <steve@sakoman.com> | 2022-07-27 07:01:24 -1000 |
| commit | 7c3043df56b3090138fe56f8c06df5ca08cafd26 (patch) | |
| tree | 51c3b4242bf3c76d27647284399613cf23da13dc | |
| parent | 191db3c58b52fa7c8530d82f7e3e3b24075fdeb4 (diff) | |
| download | openembedded-core-contrib-7c3043df56b3090138fe56f8c06df5ca08cafd26.tar.gz | |
qemu: CVE-2022-35414 can perform an uninitialized read on the translate_fail path, leading to an io_readx or io_writex crash
Source: https://github.com/qemu/qemu
MR: 119832
Type: Security Fix
Disposition: Backport from https://github.com/qemu/qemu/commit/418ade7849ce7641c0f7333718caf5091a02fd4c
ChangeID: 1246afd7bb950d2d5fe2e198961797c0fa14ac00
Description:
CVE-2022-35414 qemu: can perform an uninitialized read on the translate_fail path, leading to an io_readx or io_writex crash.
Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu.inc | 1 | ||||
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2022-35414.patch | 53 |
2 files changed, 54 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index 4135619fc6..10b4280b23 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -98,6 +98,7 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://CVE-2020-13253_4.patch \ file://CVE-2020-13253_5.patch \ file://CVE-2020-13791.patch \ + file://CVE-2022-35414.patch \ " UPSTREAM_CHECK_REGEX = "qemu-(?P<pver>\d+(\.\d+)+)\.tar" 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 + |