Re: [edk2-devel] [edk2-stable202402 PATCH 0/2] UefiCpuPkg/PiSmmCpuDxeSmm: fix NULL deref when gSmmBaseHobGuid is missing

["Gerd Hoffmann" <kraxel@redhat.com>]

On Tue, Feb 13, 2024 at 10:09:16PM +0100, Laszlo Ersek wrote:
> Bugzilla: https://bugzilla.tianocore.org/show_bug.cgi?id=4682
> 
> Personal CI run (in progress):
> https://github.com/tianocore/edk2/pull/5370
> 
> Commit 725acd0b9cc0 ("UefiCpuPkg: Avoid assuming only one smmbasehob",
> 2023-12-12) introduced a NULL pointer dereference to PiSmmCpuDxeSmm on
> such platforms that do not produce the "gSmmBaseHobGuid" GUID HOB at
> all.
> 
> Please see the multi-step analysis in the following thread:
> 
>   [edk2-devel] [PATCH 1/1] OvmfPkg/QemuVideoDxe: purge VbeShim
>   https://edk2.groups.io/g/devel/message/115377
>   message-id: <20240213085925.687848-1-kraxel@redhat.com>
> 
> This issue needs to be fixed for edk2-stable202402.
> 
> Cc: Dun Tan <dun.tan@intel.com>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Cc: Liming Gao <gaoliming@byosoft.com.cn>
> Cc: Michael D Kinney <michael.d.kinney@intel.com>
> Cc: Rahul Kumar <rahul1.kumar@intel.com>
> Cc: Ray Ni <ray.ni@intel.com>

Series:
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>

take care,
  Gerd



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