{
  "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-2022-48895",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-48895",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2024-08-21T06:10:27.612Z",
    "updatedAt": "2026-05-11T18:49:15.549Z",
    "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": "iommu/arm-smmu: Don't unregister on shutdown",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/arm-smmu: Don't unregister on shutdown\n\nMichael Walle says he noticed the following stack trace while performing\na shutdown with \"reboot -f\". He suggests he got \"lucky\" and just hit the\ncorrect spot for the reboot while there was a packet transmission in\nflight.\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000098\nCPU: 0 PID: 23 Comm: kworker/0:1 Not tainted 6.1.0-rc5-00088-gf3600ff8e322 #1930\nHardware name: Kontron KBox A-230-LS (DT)\npc : iommu_get_dma_domain+0x14/0x20\nlr : iommu_dma_map_page+0x9c/0x254\nCall trace:\n iommu_get_dma_domain+0x14/0x20\n dma_map_page_attrs+0x1ec/0x250\n enetc_start_xmit+0x14c/0x10b0\n enetc_xmit+0x60/0xdc\n dev_hard_start_xmit+0xb8/0x210\n sch_direct_xmit+0x11c/0x420\n __dev_queue_xmit+0x354/0xb20\n ip6_finish_output2+0x280/0x5b0\n __ip6_finish_output+0x15c/0x270\n ip6_output+0x78/0x15c\n NF_HOOK.constprop.0+0x50/0xd0\n mld_sendpack+0x1bc/0x320\n mld_ifc_work+0x1d8/0x4dc\n process_one_work+0x1e8/0x460\n worker_thread+0x178/0x534\n kthread+0xe0/0xe4\n ret_from_fork+0x10/0x20\nCode: d503201f f9416800 d503233f d50323bf (f9404c00)\n---[ end trace 0000000000000000 ]---\nKernel panic - not syncing: Oops: Fatal exception in interrupt\n\nThis appears to be reproducible when the board has a fixed IP address,\nis ping flooded from another host, and \"reboot -f\" is used.\n\nThe following is one more manifestation of the issue:\n\n$ reboot -f\nkvm: exiting hardware virtualization\ncfg80211: failed to load regulatory.db\narm-smmu 5000000.iommu: disabling translation\nsdhci-esdhc 2140000.mmc: Removing from iommu group 11\nsdhci-esdhc 2150000.mmc: Removing from iommu group 12\nfsl-edma 22c0000.dma-controller: Removing from iommu group 17\ndwc3 3100000.usb: Removing from iommu group 9\ndwc3 3110000.usb: Removing from iommu group 10\nahci-qoriq 3200000.sata: Removing from iommu group 2\nfsl-qdma 8380000.dma-controller: Removing from iommu group 20\nplatform f080000.display: Removing from iommu group 0\netnaviv-gpu f0c0000.gpu: Removing from iommu group 1\netnaviv etnaviv: Removing from iommu group 1\ncaam_jr 8010000.jr: Removing from iommu group 13\ncaam_jr 8020000.jr: Removing from iommu group 14\ncaam_jr 8030000.jr: Removing from iommu group 15\ncaam_jr 8040000.jr: Removing from iommu group 16\nfsl_enetc 0000:00:00.0: Removing from iommu group 4\narm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with \"arm-smmu.disable_bypass=0\" to allow, but this may have security implications\narm-smmu 5000000.iommu:         GFSR 0x80000002, GFSYNR0 0x00000002, GFSYNR1 0x00000429, GFSYNR2 0x00000000\nfsl_enetc 0000:00:00.1: Removing from iommu group 5\narm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with \"arm-smmu.disable_bypass=0\" to allow, but this may have security implications\narm-smmu 5000000.iommu:         GFSR 0x80000002, GFSYNR0 0x00000002, GFSYNR1 0x00000429, GFSYNR2 0x00000000\narm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with \"arm-smmu.disable_bypass=0\" to allow, but this may have security implications\narm-smmu 5000000.iommu:         GFSR 0x80000002, GFSYNR0 0x00000000, GFSYNR1 0x00000429, GFSYNR2 0x00000000\nfsl_enetc 0000:00:00.2: Removing from iommu group 6\nfsl_enetc_mdio 0000:00:00.3: Removing from iommu group 8\nmscc_felix 0000:00:00.5: Removing from iommu group 3\nfsl_enetc 0000:00:00.6: Removing from iommu group 7\npcieport 0001:00:00.0: Removing from iommu group 18\narm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with \"arm-smmu.disable_bypass=0\" to allow, but this may have security implications\narm-smmu 5000000.iommu:         GFSR 0x00000002, GFSYNR0 0x00000000, GFSYNR1 0x00000429, GFSYNR2 0x00000000\npcieport 0002:00:00.0: Removing from iommu group 19\nUnable to handle kernel NULL pointer dereference at virtual address 00000000000000a8\npc : iommu_get_dma_domain+0x14/0x20\nlr : iommu_dma_unmap_page+0x38/0xe0\nCall trace:\n iommu_get_dma_domain+0x14/0x20\n dma_unmap_page_attrs+0x38/0x1d0\n en\n---truncated---",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "57365a04c92126525a58bf7a1599ddfa832415e9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a1b9c7b1978aacf4b2f33e34bde1e2bb80b8497a"
            },
            {
              "version": "57365a04c92126525a58bf7a1599ddfa832415e9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ce31e6ca68bd7639bd3e5ef97be215031842bbab"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.1",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.1"
            },
            {
              "version": "6.1.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}