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e5aaeac355
qemu/hw/i386
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Dov Murik e5aaeac355 hw/i386: Improve bounds checking in OVMF table parsing 
When pc_system_parse_ovmf_flash() parses the optional GUIDed table in
the end of the OVMF flash memory area, the table length field is checked
for sizes that are too small, but doesn't error on sizes that are too
big (bigger than the flash content itself).

Add a check for maximal size of the OVMF table, and add an error report
in case the size is invalid.  In such a case, an error like this will be
displayed during launch:

    qemu-system-x86_64: OVMF table has invalid size 4047

and the table parsing is skipped.

Signed-off-by: Dov Murik <dovmurik@linux.ibm.com>
Message-Id: <20220222071906.2632426-2-dovmurik@linux.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2022-03-06 05:08:23 -05:00
..
kvm i386/kvm: Replace abs64() with uabs64() from host-utils 2021-09-29 19:37:38 +10:00
xen xen-mapcache: Avoid entry->lock overflow 2022-01-27 15:14:21 +00:00
acpi-build.c ACPI ERST: create ACPI ERST table for pc/x86 machines 2022-02-06 04:33:50 -05:00
acpi-build.h hw/acpi/ich9: Enable ACPI PCI hot-plug 2021-07-16 04:33:35 -04:00
acpi-common.c acpi: x86: madt: use build_append_int_noprefix() API to compose MADT table 2021-10-05 17:30:57 -04:00
acpi-common.h misc: Correct relative include path 2021-06-05 21:10:42 +02:00
acpi-microvm.c ACPI ERST: create ACPI ERST table for pc/x86 machines 2022-02-06 04:33:50 -05:00
acpi-microvm.h microvm/acpi: add minimal acpi support 2020-09-17 14:16:19 +02:00
amd_iommu.c dma: Let dma_memory_read/write() take MemTxAttrs argument 2021-12-30 17:16:32 +01:00
amd_iommu.h Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
e820_memory_layout.c hw/i386/pc: Extract e820 memory layout code 2019-09-16 17:13:07 +02:00
e820_memory_layout.h hw/i386/pc: Extract e820 memory layout code 2019-09-16 17:13:07 +02:00
fw_cfg.c hw/i386/fw_cfg: Set SGX bits in feature control fw_cfg accordingly 2021-09-30 15:30:24 +02:00
fw_cfg.h acpi: factor out fw_cfg_add_acpi_dsdt() 2020-06-24 17:18:28 -04:00
generic_event_device_x86.c acpi: ged: add x86 device variant. 2020-09-17 14:16:19 +02:00
intel_iommu_internal.h intel_iommu: support snoop control 2022-03-06 05:08:23 -05:00
intel_iommu.c intel_iommu: support snoop control 2022-03-06 05:08:23 -05:00
Kconfig hw/i386/pc: Allow instantiating a virtio-iommu device 2021-11-01 18:49:10 -04:00
kvmvapic.c Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
meson.build microvm: add device tree support. 2021-11-02 17:24:17 +01:00
microvm-dt.c microvm: check g_file_set_contents() return value 2021-11-22 11:14:28 +01:00
microvm-dt.h microvm: add device tree support. 2021-11-02 17:24:17 +01:00
microvm.c * Build system fixes and cleanups 2021-11-03 13:07:30 -04:00
multiboot.c target/i386: use DMA-enabled multiboot ROM for new-enough QEMU machine types 2021-11-02 15:57:27 +01:00
multiboot.h target/i386: use DMA-enabled multiboot ROM for new-enough QEMU machine types 2021-11-02 15:57:27 +01:00
pc_piix.c Mark remaining global TypeInfo instances as const 2022-02-21 13:30:20 +00:00
pc_q35.c hw/i386: expose a "smbios-entry-point-type" PC machine property 2022-01-07 05:19:55 -05:00
pc_sysfw_ovmf-stubs.c hw/i386: Introduce X86_FW_OVMF Kconfig symbol 2021-07-14 22:28:58 +02:00
pc_sysfw_ovmf.c hw/i386: Improve bounds checking in OVMF table parsing 2022-03-06 05:08:23 -05:00
pc_sysfw.c target/i386/sev: Declare system-specific functions in 'sev.h' 2021-10-13 10:47:49 +02:00
pc.c hw/i386/pc: Add missing property descriptions 2022-01-07 19:30:13 -05:00
port92.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
sgx-epc.c Mark remaining global TypeInfo instances as const 2022-02-21 13:30:20 +00:00
sgx-stub.c numa: Enable numa for SGX EPC sections 2021-12-10 09:47:18 +01:00
sgx.c qapi: Cleanup SGX related comments and restore @section-size 2022-01-28 11:13:33 +01:00
trace-events docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vmmouse.c hw/i386/vmmouse: Require 'i8042' property to be set 2021-12-18 10:57:37 +01:00
vmport.c Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
x86-iommu-stub.c hw/i386/pc: Remove x86_iommu_get_type() 2021-11-01 18:49:10 -04:00
x86-iommu.c hw/i386/pc: Move IOMMU singleton into PCMachineState 2021-11-01 18:49:10 -04:00
x86.c target/i386: use DMA-enabled multiboot ROM for new-enough QEMU machine types 2021-11-02 15:57:27 +01:00