{
  "cveId": "CVE-2026-98180",
  "url": "https://patchblox.com/security/cve/CVE-2026-98180",
  "summary": "CVE-2026-98180 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98180 (version 7.2.8-1), released October 6, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "drm/msm: RCU-free the scheduler-containing ring and VM objects",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/msm: RCU-free the scheduler-containing ring and VM objects  Both struct msm_ringbuffer and struct msm_gem_vm embed a struct drm_gpu_scheduler.  msm_ringbuffer_destroy() and the VM free callback msm_gem_vm_free() call drm_sched_fini() on the embedded scheduler and then free the containing object with plain kfree().  drm_sched_fence_get_timeline_name() returns fence-\u003Esched-\u003Ename, and the scheduler fence keeps a .release callback so it is not ops-detached on signalling.  A finished fence exported to userspace (the submit out-fence, or a VM_BIND fence, via sync_file / drm_syncobj) keeps pointing at the embedded scheduler after the ring/VM is freed, so a later get_timeline_name() -- reachable unprivileged through SYNC_IOC_FILE_INFO -- dereferences freed slab memory (KASAN slab-use-after-free read).  Per the dma-fence lifetime contract the exporter must keep the data backing a signalled fence alive for an RCU grace period.  Free the scheduler-containing objects with kfree_rcu() instead of kfree().  Patchwork: https://patchwork.freedesktop.org/patch/750234/",
  "published": "2026-10-06T09:18:01Z",
  "severity": "Critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.00121,
  "epssPercentile": 0.01889,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98180",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.8-1",
      "fix": "DEBIAN-CVE-2026-98180",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98180",
      "released": "2026-10-06T21:56:27Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}