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CVE-2026-98319

Linux: drm: Fix drm_pending_vblank_event leak in error path for out_fence_ptr

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.18%Chance of exploitation activity in the next 30 days, higher than 7% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3d6576ed3de01e8a378397b7020e33ae3d40aa6cAlso 86c33f740aa27e9cdc1259f0cc59c9c58f545e4b, 88c450e23b8fd4f1dcd329562f5e81ef05f3d941 and 3 moreCVE List
Published6 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 3d6576ed3de01e8a378397b7020e33ae3d40aa6cLinuxCVE List
  • 86c33f740aa27e9cdc1259f0cc59c9c58f545e4bLinuxCVE List
  • 88c450e23b8fd4f1dcd329562f5e81ef05f3d941LinuxCVE List
  • 780716e2e019186fa6e5aad097a44b87b0b5388fLinuxCVE List
  • 9eb1a393c89a79c4210230d23e7d88d239c61d7bLinuxCVE List
  • 4.10LinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 20

  • Linuxaffected: 92c715fca907686f5298220ece53423e38ba3aed before 3d6576ed3de01e8a378397b7020e33ae3d40aa6cCVE List
  • Linuxaffected: 92c715fca907686f5298220ece53423e38ba3aed before 86c33f740aa27e9cdc1259f0cc59c9c58f545e4bCVE List
  • Linuxaffected: 92c715fca907686f5298220ece53423e38ba3aed before 88c450e23b8fd4f1dcd329562f5e81ef05f3d941CVE List
  • Linuxaffected: 92c715fca907686f5298220ece53423e38ba3aed before 780716e2e019186fa6e5aad097a44b87b0b5388fCVE List
  • Linuxaffected: 92c715fca907686f5298220ece53423e38ba3aed before d0be0516b5224eb5b6f42f8564a8deadb20ae16bCVE List
  • Linuxaffected: 92c715fca907686f5298220ece53423e38ba3aed before daefd7ff159b0d1fb8c9e64430dcbe2aca1bdd09CVE List
  • Linuxaffected: 92c715fca907686f5298220ece53423e38ba3aed before b9a68a9ccaada15d8dd0102c188cc6b868ff800bCVE List
  • Linuxaffected: 92c715fca907686f5298220ece53423e38ba3aed before 9eb1a393c89a79c4210230d23e7d88d239c61d7bCVE List
  • Linuxaffected: 4cd462c7f2b6fcc208aebf44f2c831681feaa925CVE List
  • Linuxaffected: 4.9.10 before 4.10CVE List
  • Linuxaffected: 4.10CVE List
  • Linuxunaffected: all versions before 4.10CVE List
  • Linuxunaffected: 5.10.271 through 5.10.*CVE List
  • Linuxunaffected: 5.15.222 through 5.15.*CVE List
  • Linuxunaffected: 6.1.189 through 6.1.*CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.112 through 6.12.*CVE List
  • Linuxunaffected: 6.18.54 through 6.18.*CVE List
  • Linuxunaffected: 7.2.8 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 8