CVE-2023-53833

Summary

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

drm/i915: Fix NULL ptr deref by checking new_crtc_state

intel_atomic_get_new_crtc_state can return NULL, unless crtc state wasn't obtained previously with intel_atomic_get_crtc_state, so we must check it for NULLness here, just as in many other places, where we can't guarantee that intel_atomic_get_crtc_state was called. We are currently getting NULL ptr deref because of that, so this fix was confirmed to help.

(cherry picked from commit 1d5b09f8daf859247a1ea65b0d732a24d88980d8)

Affected Software

VendorProductVersion RangeStatus
LinuxLinux74a75dc908692dd0548209004e53832c02433c0c < dbf25cc21beff4fd2e730573845a266504b21bb2affected
LinuxLinux74a75dc908692dd0548209004e53832c02433c0c < 8b3c0d2d1685ba40b0af4ee1f8d8824a73870f88affected
LinuxLinux74a75dc908692dd0548209004e53832c02433c0c < a41d985902c153c31c616fe183cf2ee331e95ecbaffected
LinuxLinux5.16affected
LinuxLinux0 < 5.16unaffected
LinuxLinux6.1.30 <= 6.1.*unaffected
LinuxLinux6.3.4 <= 6.3.*unaffected
LinuxLinux6.4 <= *unaffected

Weaknesses

References