Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com
☎ 03 60 47 09 81 - info@securiteinfo.com
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)
No PoCs from references.
- https://github.com/w4zu/Debian_security