cve/2024/CVE-2024-50117.md

### [CVE-2024-50117](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-50117)
![](https://img.shields.io/static/v1?label=Product&message=Linux&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=4.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=d38ceaf99ed015f2a0b9af3499791bd3a3daae21%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=blue)

### Description

In the Linux kernel, the following vulnerability has been resolved:drm/amd: Guard against bad data for ATIF ACPI methodIf a BIOS provides bad data in response to an ATIF method callthis causes a NULL pointer dereference in the caller.```? show_regs (arch/x86/kernel/dumpstack.c:478 (discriminator 1))? __die (arch/x86/kernel/dumpstack.c:423 arch/x86/kernel/dumpstack.c:434)? page_fault_oops (arch/x86/mm/fault.c:544 (discriminator 2) arch/x86/mm/fault.c:705 (discriminator 2))? do_user_addr_fault (arch/x86/mm/fault.c:440 (discriminator 1) arch/x86/mm/fault.c:1232 (discriminator 1))? acpi_ut_update_object_reference (drivers/acpi/acpica/utdelete.c:642)? exc_page_fault (arch/x86/mm/fault.c:1542)? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623)? amdgpu_atif_query_backlight_caps.constprop.0 (drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:387 (discriminator 2)) amdgpu? amdgpu_atif_query_backlight_caps.constprop.0 (drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:386 (discriminator 1)) amdgpu```It has been encountered on at least one system, so guard for it.(cherry picked from commit c9b7c809b89f24e9372a4e7f02d64c950b07fdee)

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/w4zu/Debian_security