{
  "cveId": "CVE-2022-48658",
  "url": "https://patchblox.com/security/cve/CVE-2022-48658",
  "summary": "CVE-2022-48658 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48658, released April 28, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mm: slub: fix flush_cpu_slab()/__free_slab() inv...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mm: slub: fix flush_cpu_slab()/__free_slab() invocations in task context.  Commit 5a836bf6b09f (\u0022mm: slub: move flush_cpu_slab() invocations __free_slab() invocations out of IRQ context\u0022) moved all flush_cpu_slab() invocations to the global workqueue to avoid a problem related with deactivate_slab()/__free_slab() being called from an IRQ context on PREEMPT_RT kernels.  When the flush_all_cpu_locked() function is called from a task context it may happen that a workqueue with WQ_MEM_RECLAIM bit set ends up flushing the global workqueue, this will cause a dependency issue.   workqueue: WQ_MEM_RECLAIM nvme-delete-wq:nvme_delete_ctrl_work [nvme_core]    is flushing !WQ_MEM_RECLAIM events:flush_cpu_slab  WARNING: CPU: 37 PID: 410 at kernel/workqueue.c:2637    check_flush_dependency\u002B0x10a/0x120  Workqueue: nvme-delete-wq nvme_delete_ctrl_work [nvme_core]  RIP: 0010:check_flush_dependency\u002B0x10a/0x120[  453.262125] Call Trace:  __flush_work.isra.0\u002B0xbf/0x220  ? __queue_work\u002B0x1dc/0x420  flush_all_cpus_locked\u002B0xfb/0x120  __kmem_cache_shutdown\u002B0x2b/0x320  kmem_cache_destroy\u002B0x49/0x100  bioset_exit\u002B0x143/0x190  blk_release_queue\u002B0xb9/0x100  kobject_cleanup\u002B0x37/0x130  nvme_fc_ctrl_free\u002B0xc6/0x150 [nvme_fc]  nvme_free_ctrl\u002B0x1ac/0x2b0 [nvme_core]  Fix this bug by creating a workqueue for the flush operation with the WQ_MEM_RECLAIM bit set.",
  "published": "2024-04-28T13:15:07Z",
  "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": 0.00673,
  "epssPercentile": 0.52337,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.0.2-1",
      "fix": "DEBIAN-CVE-2022-48658",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48658",
      "released": "2024-04-28T13:15:07Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.0.2-1",
      "fix": "DEBIAN-CVE-2022-48658",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48658",
      "released": "2024-04-28T13:15:07Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.0.2-1",
      "fix": "DEBIAN-CVE-2022-48658",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48658",
      "released": "2024-04-28T13:15:07Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}