CVE-2024-50117

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/amd: Guard against bad data for ATIF ACPI method

If a BIOS provides bad data in response to an ATIF method call this 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)

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 58556dcbd5606a5daccaee73b2130bc16b48e025affected
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 43b4fa6e0e238c6e2662f4fb61d9f51c2785fb1daffected
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 234682910971732cd4da96fd95946e296e486b38affected
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 6032287747f874b52dc8b9d7490e2799736e035faffected
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 < cd67af3c1762de4c2483ae4dbdd98f9ea8fa56e3affected
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 975ede2a7bec52b5da1428829b3439667c8a234baffected
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 1d7175f9c57b1abf9ecfbdfd53ea760761f52ffeaffected
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 < bf58f03931fdcf7b3c45cb76ac13244477a60f44affected
LinuxLinux4.2affected
LinuxLinux0 < 4.2unaffected
LinuxLinux4.19.323 <= 4.19.*unaffected
LinuxLinux5.4.285 <= 5.4.*unaffected
LinuxLinux5.10.229 <= 5.10.*unaffected
LinuxLinux5.15.170 <= 5.15.*unaffected
LinuxLinux6.1.115 <= 6.1.*unaffected
LinuxLinux6.6.59 <= 6.6.*unaffected
LinuxLinux6.11.6 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References