Hi Laszlo,
Thanks for the help.
Regards,
Kun
On 04/12/2021 10:36, Laszlo Ersek wrote:
On 04/07/21 18:08, Laszlo Ersek wrote:
On 04/06/21 21:52, Kun Qin wrote:
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3283
Current SMM Save State routine does not check the number of bytes to be
read, when it comse to read IO_INFO, before casting the incoming buffer
to EFI_SMM_SAVE_STATE_IO_INFO. This could potentially cause memory
corruption due to extra bytes are written out of buffer boundary.
This change adds a width check before copying IoInfo into output buffer.
Cc: Eric Dong <eric.d...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Laszlo Ersek <ler...@redhat.com>
Cc: Rahul Kumar <rahul1.ku...@intel.com>
Signed-off-by: Kun Qin <kuqi...@gmail.com>
Reviewed-by: Ray Ni <ray...@intel.com>
Reviewed-by: Laszlo Ersek <ler...@redhat.com>
---
Notes:
v2:
- Update return code description [Laszlo]
UefiCpuPkg/PiSmmCpuDxeSmm/SmramSaveState.c | 9 ++++++++-
UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h | 2 +-
2 files changed, 9 insertions(+), 2 deletions(-)
Thanks, looks OK. I'll let Ray or Eric merge the patch.
:/
Merged as commit a7d8e28b29f2, via
<https://github.com/tianocore/edk2/pull/1554>.
Laszlo
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