CVE-2026-98319

Summary

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

drm: Fix drm_pending_vblank_event leak in error path for out_fence_ptr

When an out_fence_ptr is provided but DRM_MODE_PAGE_FLIP_EVENT is not set, a drm_pending_vblank_event will be allocated. If later, there is an allocation failure or another failure at setup_out_fence(), that event will not have base.fence set and it will not be released at complete_signaling().

Release the event and set crtc_state->event to NULL just like in the DRM_MODE_PAGE_FLIP_EVENT case when there is a failure at drm_event_reserve_init(). That is, prepare_signaling() releases the event and there is nothing to be done at complete_signaling(). Use drm_event_cancel_free() as that will also undo drm_event_reserve_init() in case it has been called.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux92c715fca907686f5298220ece53423e38ba3aed < 3d6576ed3de01e8a378397b7020e33ae3d40aa6caffected
LinuxLinux92c715fca907686f5298220ece53423e38ba3aed < 86c33f740aa27e9cdc1259f0cc59c9c58f545e4baffected
LinuxLinux92c715fca907686f5298220ece53423e38ba3aed < 88c450e23b8fd4f1dcd329562f5e81ef05f3d941affected
LinuxLinux92c715fca907686f5298220ece53423e38ba3aed < 780716e2e019186fa6e5aad097a44b87b0b5388faffected
LinuxLinux92c715fca907686f5298220ece53423e38ba3aed < d0be0516b5224eb5b6f42f8564a8deadb20ae16baffected
LinuxLinux92c715fca907686f5298220ece53423e38ba3aed < daefd7ff159b0d1fb8c9e64430dcbe2aca1bdd09affected
LinuxLinux92c715fca907686f5298220ece53423e38ba3aed < b9a68a9ccaada15d8dd0102c188cc6b868ff800baffected
LinuxLinux92c715fca907686f5298220ece53423e38ba3aed < 9eb1a393c89a79c4210230d23e7d88d239c61d7baffected
LinuxLinux4cd462c7f2b6fcc208aebf44f2c831681feaa925affected
LinuxLinux4.9.10 < 4.10affected
LinuxLinux4.10affected
LinuxLinux0 < 4.10unaffected
LinuxLinux5.10.271 <= 5.10.*unaffected
LinuxLinux5.15.222 <= 5.15.*unaffected
LinuxLinux6.1.189 <= 6.1.*unaffected
LinuxLinux6.6.158 <= 6.6.*unaffected
LinuxLinux6.12.112 <= 6.12.*unaffected
LinuxLinux6.18.54 <= 6.18.*unaffected
LinuxLinux7.2.8 <= 7.2.*unaffected
LinuxLinux7.3-rc4 <= *unaffected

Weaknesses

References