{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2022-48658",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-48658",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2024-04-28T13:01:12.987Z",
    "updatedAt": "2026-08-05T08:51:39.776Z",
    "importedAt": "2026-10-24T01:56:45.230Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "mm: slub: fix flush_cpu_slab()/__free_slab() invocations in task context.",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: slub: fix flush_cpu_slab()/__free_slab() invocations in task context.\n\nCommit 5a836bf6b09f (\"mm: slub: move flush_cpu_slab() invocations\n__free_slab() invocations out of IRQ context\") moved all flush_cpu_slab()\ninvocations to the global workqueue to avoid a problem related\nwith deactivate_slab()/__free_slab() being called from an IRQ context\non PREEMPT_RT kernels.\n\nWhen the flush_all_cpu_locked() function is called from a task context\nit may happen that a workqueue with WQ_MEM_RECLAIM bit set ends up\nflushing the global workqueue, this will cause a dependency issue.\n\n workqueue: WQ_MEM_RECLAIM nvme-delete-wq:nvme_delete_ctrl_work [nvme_core]\n   is flushing !WQ_MEM_RECLAIM events:flush_cpu_slab\n WARNING: CPU: 37 PID: 410 at kernel/workqueue.c:2637\n   check_flush_dependency+0x10a/0x120\n Workqueue: nvme-delete-wq nvme_delete_ctrl_work [nvme_core]\n RIP: 0010:check_flush_dependency+0x10a/0x120[  453.262125] Call Trace:\n __flush_work.isra.0+0xbf/0x220\n ? __queue_work+0x1dc/0x420\n flush_all_cpus_locked+0xfb/0x120\n __kmem_cache_shutdown+0x2b/0x320\n kmem_cache_destroy+0x49/0x100\n bioset_exit+0x143/0x190\n blk_release_queue+0xb9/0x100\n kobject_cleanup+0x37/0x130\n nvme_fc_ctrl_free+0xc6/0x150 [nvme_fc]\n nvme_free_ctrl+0x1ac/0x2b0 [nvme_core]\n\nFix this bug by creating a workqueue for the flush operation with\nthe WQ_MEM_RECLAIM bit set.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5a836bf6b09f99ead1b69457ff39ab3011ece57b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "61703b248be993eb4997b00ae5d3318e6d8f3c5b"
            },
            {
              "version": "5a836bf6b09f99ead1b69457ff39ab3011ece57b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "df6cb39335cf5a1b918e8dbd8ba7cd9f1d00e45a"
            },
            {
              "version": "5a836bf6b09f99ead1b69457ff39ab3011ece57b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e45cc288724f0cfd497bb5920bcfa60caa335729"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.15"
            },
            {
              "version": "5.15.71",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.19.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "version": "6.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}