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GHSA-J5PJ-MR9V-2742

Vulnerability from github – Published: 2024-08-21 09:31 – Updated: 2024-09-11 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

iommu/arm-smmu: Don't unregister on shutdown

Michael Walle says he noticed the following stack trace while performing a shutdown with "reboot -f". He suggests he got "lucky" and just hit the correct spot for the reboot while there was a packet transmission in flight.

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000098 CPU: 0 PID: 23 Comm: kworker/0:1 Not tainted 6.1.0-rc5-00088-gf3600ff8e322 #1930 Hardware name: Kontron KBox A-230-LS (DT) pc : iommu_get_dma_domain+0x14/0x20 lr : iommu_dma_map_page+0x9c/0x254 Call trace: iommu_get_dma_domain+0x14/0x20 dma_map_page_attrs+0x1ec/0x250 enetc_start_xmit+0x14c/0x10b0 enetc_xmit+0x60/0xdc dev_hard_start_xmit+0xb8/0x210 sch_direct_xmit+0x11c/0x420 __dev_queue_xmit+0x354/0xb20 ip6_finish_output2+0x280/0x5b0 __ip6_finish_output+0x15c/0x270 ip6_output+0x78/0x15c NF_HOOK.constprop.0+0x50/0xd0 mld_sendpack+0x1bc/0x320 mld_ifc_work+0x1d8/0x4dc process_one_work+0x1e8/0x460 worker_thread+0x178/0x534 kthread+0xe0/0xe4 ret_from_fork+0x10/0x20 Code: d503201f f9416800 d503233f d50323bf (f9404c00) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Oops: Fatal exception in interrupt

This appears to be reproducible when the board has a fixed IP address, is ping flooded from another host, and "reboot -f" is used.

The following is one more manifestation of the issue:

$ reboot -f kvm: exiting hardware virtualization cfg80211: failed to load regulatory.db arm-smmu 5000000.iommu: disabling translation sdhci-esdhc 2140000.mmc: Removing from iommu group 11 sdhci-esdhc 2150000.mmc: Removing from iommu group 12 fsl-edma 22c0000.dma-controller: Removing from iommu group 17 dwc3 3100000.usb: Removing from iommu group 9 dwc3 3110000.usb: Removing from iommu group 10 ahci-qoriq 3200000.sata: Removing from iommu group 2 fsl-qdma 8380000.dma-controller: Removing from iommu group 20 platform f080000.display: Removing from iommu group 0 etnaviv-gpu f0c0000.gpu: Removing from iommu group 1 etnaviv etnaviv: Removing from iommu group 1 caam_jr 8010000.jr: Removing from iommu group 13 caam_jr 8020000.jr: Removing from iommu group 14 caam_jr 8030000.jr: Removing from iommu group 15 caam_jr 8040000.jr: Removing from iommu group 16 fsl_enetc 0000:00:00.0: Removing from iommu group 4 arm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with "arm-smmu.disable_bypass=0" to allow, but this may have security implications arm-smmu 5000000.iommu: GFSR 0x80000002, GFSYNR0 0x00000002, GFSYNR1 0x00000429, GFSYNR2 0x00000000 fsl_enetc 0000:00:00.1: Removing from iommu group 5 arm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with "arm-smmu.disable_bypass=0" to allow, but this may have security implications arm-smmu 5000000.iommu: GFSR 0x80000002, GFSYNR0 0x00000002, GFSYNR1 0x00000429, GFSYNR2 0x00000000 arm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with "arm-smmu.disable_bypass=0" to allow, but this may have security implications arm-smmu 5000000.iommu: GFSR 0x80000002, GFSYNR0 0x00000000, GFSYNR1 0x00000429, GFSYNR2 0x00000000 fsl_enetc 0000:00:00.2: Removing from iommu group 6 fsl_enetc_mdio 0000:00:00.3: Removing from iommu group 8 mscc_felix 0000:00:00.5: Removing from iommu group 3 fsl_enetc 0000:00:00.6: Removing from iommu group 7 pcieport 0001:00:00.0: Removing from iommu group 18 arm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with "arm-smmu.disable_bypass=0" to allow, but this may have security implications arm-smmu 5000000.iommu: GFSR 0x00000002, GFSYNR0 0x00000000, GFSYNR1 0x00000429, GFSYNR2 0x00000000 pcieport 0002:00:00.0: Removing from iommu group 19 Unable to handle kernel NULL pointer dereference at virtual address 00000000000000a8 pc : iommu_get_dma_domain+0x14/0x20 lr : iommu_dma_unmap_page+0x38/0xe0 Call trace: iommu_get_dma_domain+0x14/0x20 dma_unmap_page_attrs+0x38/0x1d0 en ---truncated---

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48895"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-21T07:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/arm-smmu: Don\u0027t 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---",
  "id": "GHSA-j5pj-mr9v-2742",
  "modified": "2024-09-11T18:31:02Z",
  "published": "2024-08-21T09:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48895"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a1b9c7b1978aacf4b2f33e34bde1e2bb80b8497a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce31e6ca68bd7639bd3e5ef97be215031842bbab"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-48895 (GCVE-0-2022-48895)

Vulnerability from cvelistv5 – Published: 2024-08-21 06:10 – Updated: 2026-05-11 18:49

Title

iommu/arm-smmu: Don't unregister on shutdown

Summary

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Don't unregister on shutdown Michael Walle says he noticed the following stack trace while performing a shutdown with "reboot -f". He suggests he got "lucky" and just hit the correct spot for the reboot while there was a packet transmission in flight. Unable to handle kernel NULL pointer dereference at virtual address 0000000000000098 CPU: 0 PID: 23 Comm: kworker/0:1 Not tainted 6.1.0-rc5-00088-gf3600ff8e322 #1930 Hardware name: Kontron KBox A-230-LS (DT) pc : iommu_get_dma_domain+0x14/0x20 lr : iommu_dma_map_page+0x9c/0x254 Call trace: iommu_get_dma_domain+0x14/0x20 dma_map_page_attrs+0x1ec/0x250 enetc_start_xmit+0x14c/0x10b0 enetc_xmit+0x60/0xdc dev_hard_start_xmit+0xb8/0x210 sch_direct_xmit+0x11c/0x420 __dev_queue_xmit+0x354/0xb20 ip6_finish_output2+0x280/0x5b0 __ip6_finish_output+0x15c/0x270 ip6_output+0x78/0x15c NF_HOOK.constprop.0+0x50/0xd0 mld_sendpack+0x1bc/0x320 mld_ifc_work+0x1d8/0x4dc process_one_work+0x1e8/0x460 worker_thread+0x178/0x534 kthread+0xe0/0xe4 ret_from_fork+0x10/0x20 Code: d503201f f9416800 d503233f d50323bf (f9404c00) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Oops: Fatal exception in interrupt This appears to be reproducible when the board has a fixed IP address, is ping flooded from another host, and "reboot -f" is used. The following is one more manifestation of the issue: $ reboot -f kvm: exiting hardware virtualization cfg80211: failed to load regulatory.db arm-smmu 5000000.iommu: disabling translation sdhci-esdhc 2140000.mmc: Removing from iommu group 11 sdhci-esdhc 2150000.mmc: Removing from iommu group 12 fsl-edma 22c0000.dma-controller: Removing from iommu group 17 dwc3 3100000.usb: Removing from iommu group 9 dwc3 3110000.usb: Removing from iommu group 10 ahci-qoriq 3200000.sata: Removing from iommu group 2 fsl-qdma 8380000.dma-controller: Removing from iommu group 20 platform f080000.display: Removing from iommu group 0 etnaviv-gpu f0c0000.gpu: Removing from iommu group 1 etnaviv etnaviv: Removing from iommu group 1 caam_jr 8010000.jr: Removing from iommu group 13 caam_jr 8020000.jr: Removing from iommu group 14 caam_jr 8030000.jr: Removing from iommu group 15 caam_jr 8040000.jr: Removing from iommu group 16 fsl_enetc 0000:00:00.0: Removing from iommu group 4 arm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with "arm-smmu.disable_bypass=0" to allow, but this may have security implications arm-smmu 5000000.iommu: GFSR 0x80000002, GFSYNR0 0x00000002, GFSYNR1 0x00000429, GFSYNR2 0x00000000 fsl_enetc 0000:00:00.1: Removing from iommu group 5 arm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with "arm-smmu.disable_bypass=0" to allow, but this may have security implications arm-smmu 5000000.iommu: GFSR 0x80000002, GFSYNR0 0x00000002, GFSYNR1 0x00000429, GFSYNR2 0x00000000 arm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with "arm-smmu.disable_bypass=0" to allow, but this may have security implications arm-smmu 5000000.iommu: GFSR 0x80000002, GFSYNR0 0x00000000, GFSYNR1 0x00000429, GFSYNR2 0x00000000 fsl_enetc 0000:00:00.2: Removing from iommu group 6 fsl_enetc_mdio 0000:00:00.3: Removing from iommu group 8 mscc_felix 0000:00:00.5: Removing from iommu group 3 fsl_enetc 0000:00:00.6: Removing from iommu group 7 pcieport 0001:00:00.0: Removing from iommu group 18 arm-smmu 5000000.iommu: Blocked unknown Stream ID 0x429; boot with "arm-smmu.disable_bypass=0" to allow, but this may have security implications arm-smmu 5000000.iommu: GFSR 0x00000002, GFSYNR0 0x00000000, GFSYNR1 0x00000429, GFSYNR2 0x00000000 pcieport 0002:00:00.0: Removing from iommu group 19 Unable to handle kernel NULL pointer dereference at virtual address 00000000000000a8 pc : iommu_get_dma_domain+0x14/0x20 lr : iommu_dma_unmap_page+0x38/0xe0 Call trace: iommu_get_dma_domain+0x14/0x20 dma_unmap_page_attrs+0x38/0x1d0 en ---truncated---

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 16:04 UTC

Assigner

Linux mitre root Scorecard

References

2 references

URL	Tags
https://git.kernel.org/stable/c/a1b9c7b1978aacf4b…
https://git.kernel.org/stable/c/ce31e6ca68bd7639b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 57365a04c92126525a58bf7a1599ddfa832415e9 , < a1b9c7b1978aacf4b2f33e34bde1e2bb80b8497a (git) Affected: 57365a04c92126525a58bf7a1599ddfa832415e9 , < ce31e6ca68bd7639bd3e5ef97be215031842bbab (git)
Linux	Linux	Affected: 6.1 Unaffected: 0 , < 6.1 (semver) Unaffected: 6.1.7 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-48895",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T16:04:08.905790Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:33:15.419Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/arm/arm-smmu/arm-smmu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a1b9c7b1978aacf4b2f33e34bde1e2bb80b8497a",
              "status": "affected",
              "version": "57365a04c92126525a58bf7a1599ddfa832415e9",
              "versionType": "git"
            },
            {
              "lessThan": "ce31e6ca68bd7639bd3e5ef97be215031842bbab",
              "status": "affected",
              "version": "57365a04c92126525a58bf7a1599ddfa832415e9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/arm/arm-smmu/arm-smmu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.7",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/arm-smmu: Don\u0027t 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---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T18:49:15.549Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a1b9c7b1978aacf4b2f33e34bde1e2bb80b8497a"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce31e6ca68bd7639bd3e5ef97be215031842bbab"
        }
      ],
      "title": "iommu/arm-smmu: Don\u0027t unregister on shutdown",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48895",
    "datePublished": "2024-08-21T06:10:27.612Z",
    "dateReserved": "2024-08-21T06:06:23.290Z",
    "dateUpdated": "2026-05-11T18:49:15.549Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

GHSA-J5PJ-MR9V-2742

CVE-2022-48895 (GCVE-0-2022-48895)

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