{
  "cveId": "CVE-2025-68793",
  "url": "https://patchblox.com/security/cve/CVE-2025-68793",
  "summary": "CVE-2025-68793 is fixed in linux on 1 platform by DEBIAN-CVE-2025-68793 (version 6.18.3-1), released January 13, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  drm/amdgpu: fix a job-\u003Epasid access race in gpu...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/amdgpu: fix a job-\u003Epasid access race in gpu recovery  Avoid a possible UAF in GPU recovery due to a race between the sched timeout callback and the tdr work queue.  The gpu recovery function calls drm_sched_stop() and later drm_sched_start().  drm_sched_start() restarts the tdr queue which will eventually free the job.  If the tdr queue frees the job before time out callback completes, the job will be freed and we\u0027ll get a UAF when accessing the pasid.  Cache it early to avoid the UAF.  Example KASAN trace: [  493.058141] BUG: KASAN: slab-use-after-free in amdgpu_device_gpu_recover\u002B0x968/0x990 [amdgpu] [  493.067530] Read of size 4 at addr ffff88b0ce3f794c by task kworker/u128:1/323 [  493.074892] [  493.076485] CPU: 9 UID: 0 PID: 323 Comm: kworker/u128:1 Tainted: G            E       6.16.0-1289896.2.zuul.bf4f11df81c1410bbe901c4373305a31 #1 PREEMPT(voluntary) [  493.076493] Tainted: [E]=UNSIGNED_MODULE [  493.076495] Hardware name: TYAN B8021G88V2HR-2T/S8021GM2NR-2T, BIOS V1.03.B10 04/01/2019 [  493.076500] Workqueue: amdgpu-reset-dev drm_sched_job_timedout [gpu_sched] [  493.076512] Call Trace: [  493.076515]  \u003CTASK\u003E [  493.076518]  dump_stack_lvl\u002B0x64/0x80 [  493.076529]  print_report\u002B0xce/0x630 [  493.076536]  ? _raw_spin_lock_irqsave\u002B0x86/0xd0 [  493.076541]  ? __pfx__raw_spin_lock_irqsave\u002B0x10/0x10 [  493.076545]  ? amdgpu_device_gpu_recover\u002B0x968/0x990 [amdgpu] [  493.077253]  kasan_report\u002B0xb8/0xf0 [  493.077258]  ? amdgpu_device_gpu_recover\u002B0x968/0x990 [amdgpu] [  493.077965]  amdgpu_device_gpu_recover\u002B0x968/0x990 [amdgpu] [  493.078672]  ? __pfx_amdgpu_device_gpu_recover\u002B0x10/0x10 [amdgpu] [  493.079378]  ? amdgpu_coredump\u002B0x1fd/0x4c0 [amdgpu] [  493.080111]  amdgpu_job_timedout\u002B0x642/0x1400 [amdgpu] [  493.080903]  ? pick_task_fair\u002B0x24e/0x330 [  493.080910]  ? __pfx_amdgpu_job_timedout\u002B0x10/0x10 [amdgpu] [  493.081702]  ? _raw_spin_lock\u002B0x75/0xc0 [  493.081708]  ? __pfx__raw_spin_lock\u002B0x10/0x10 [  493.081712]  drm_sched_job_timedout\u002B0x1b0/0x4b0 [gpu_sched] [  493.081721]  ? __pfx__raw_spin_lock_irq\u002B0x10/0x10 [  493.081725]  process_one_work\u002B0x679/0xff0 [  493.081732]  worker_thread\u002B0x6ce/0xfd0 [  493.081736]  ? __pfx_worker_thread\u002B0x10/0x10 [  493.081739]  kthread\u002B0x376/0x730 [  493.081744]  ? __pfx_kthread\u002B0x10/0x10 [  493.081748]  ? __pfx__raw_spin_lock_irq\u002B0x10/0x10 [  493.081751]  ? __pfx_kthread\u002B0x10/0x10 [  493.081755]  ret_from_fork\u002B0x247/0x330 [  493.081761]  ? __pfx_kthread\u002B0x10/0x10 [  493.081764]  ret_from_fork_asm\u002B0x1a/0x30 [  493.081771]  \u003C/TASK\u003E  (cherry picked from commit 20880a3fd5dd7bca1a079534cf6596bda92e107d)",
  "published": "2026-01-13T16:16:01Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00145,
  "epssPercentile": 0.03769,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.18.3-1",
      "fix": "DEBIAN-CVE-2025-68793",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-68793",
      "released": "2026-01-13T16:16:01Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}