CVE-2024-45015

Summary

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

drm/msm/dpu: move dpu_encoder's connector assignment to atomic_enable()

For cases where the crtc's connectors_changed was set without enable/active getting toggled , there is an atomic_enable() call followed by an atomic_disable() but without an atomic_mode_set().

This results in a NULL ptr access for the dpu_encoder_get_drm_fmt() call in the atomic_enable() as the dpu_encoder's connector was cleared in the atomic_disable() but not re-assigned as there was no atomic_mode_set() call.

Fix the NULL ptr access by moving the assignment for atomic_enable() and also use drm_atomic_get_new_connector_for_encoder() to get the connector from the atomic_state.

Patchwork: https://patchwork.freedesktop.org/patch/606729/

Affected Software

VendorProductVersion RangeStatus
LinuxLinux25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef < 3fb61718bcbe309279205d1cc275a6435611dc77affected
LinuxLinux25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef < 3bacf814b6a61cc683c68465f175ebd938f09c52affected
LinuxLinux25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef < aedf02e46eb549dac8db4821a6b9f0c6bf6e3990affected
LinuxLinux4.19affected
LinuxLinux0 < 4.19unaffected
LinuxLinux6.6.48 <= 6.6.*unaffected
LinuxLinux6.10.7 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References