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CVE-2022-49424 (GCVE-0-2022-49424)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:12 – Updated: 2026-05-23 15:22
VLAI
Title
iommu/mediatek: Fix NULL pointer dereference when printing dev_name
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/mediatek: Fix NULL pointer dereference when printing dev_name When larbdev is NULL (in the case I hit, the node is incorrectly set iommus = <&iommu NUM>), it will cause device_link_add() fail and kernel crashes when we try to print dev_name(larbdev). Let's fail the probe if a larbdev is NULL to avoid invalid inputs from dts. It should work for normal correct setting and avoid the crash caused by my incorrect setting. Error log: [ 18.189042][ T301] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000050 ... [ 18.344519][ T301] pstate: a0400005 (NzCv daif +PAN -UAO) [ 18.345213][ T301] pc : mtk_iommu_probe_device+0xf8/0x118 [mtk_iommu] [ 18.346050][ T301] lr : mtk_iommu_probe_device+0xd0/0x118 [mtk_iommu] [ 18.346884][ T301] sp : ffffffc00a5635e0 [ 18.347392][ T301] x29: ffffffc00a5635e0 x28: ffffffd44a46c1d8 [ 18.348156][ T301] x27: ffffff80c39a8000 x26: ffffffd44a80cc38 [ 18.348917][ T301] x25: 0000000000000000 x24: ffffffd44a80cc38 [ 18.349677][ T301] x23: ffffffd44e4da4c6 x22: ffffffd44a80cc38 [ 18.350438][ T301] x21: ffffff80cecd1880 x20: 0000000000000000 [ 18.351198][ T301] x19: ffffff80c439f010 x18: ffffffc00a50d0c0 [ 18.351959][ T301] x17: ffffffffffffffff x16: 0000000000000004 [ 18.352719][ T301] x15: 0000000000000004 x14: ffffffd44eb5d420 [ 18.353480][ T301] x13: 0000000000000ad2 x12: 0000000000000003 [ 18.354241][ T301] x11: 00000000fffffad2 x10: c0000000fffffad2 [ 18.355003][ T301] x9 : a0d288d8d7142d00 x8 : a0d288d8d7142d00 [ 18.355763][ T301] x7 : ffffffd44c2bc640 x6 : 0000000000000000 [ 18.356524][ T301] x5 : 0000000000000080 x4 : 0000000000000001 [ 18.357284][ T301] x3 : 0000000000000000 x2 : 0000000000000005 [ 18.358045][ T301] x1 : 0000000000000000 x0 : 0000000000000000 [ 18.360208][ T301] Hardware name: MT6873 (DT) [ 18.360771][ T301] Call trace: [ 18.361168][ T301] dump_backtrace+0xf8/0x1f0 [ 18.361737][ T301] dump_stack_lvl+0xa8/0x11c [ 18.362305][ T301] dump_stack+0x1c/0x2c [ 18.362816][ T301] mrdump_common_die+0x184/0x40c [mrdump] [ 18.363575][ T301] ipanic_die+0x24/0x38 [mrdump] [ 18.364230][ T301] atomic_notifier_call_chain+0x128/0x2b8 [ 18.364937][ T301] die+0x16c/0x568 [ 18.365394][ T301] __do_kernel_fault+0x1e8/0x214 [ 18.365402][ T301] do_page_fault+0xb8/0x678 [ 18.366934][ T301] do_translation_fault+0x48/0x64 [ 18.368645][ T301] do_mem_abort+0x68/0x148 [ 18.368652][ T301] el1_abort+0x40/0x64 [ 18.368660][ T301] el1h_64_sync_handler+0x54/0x88 [ 18.368668][ T301] el1h_64_sync+0x68/0x6c [ 18.368673][ T301] mtk_iommu_probe_device+0xf8/0x118 [mtk_iommu] ...
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 77fbe028d5a3f7fc6060c4454ead9510533acd1e , < c3c2734e28d7fac50228c4d2b8896e8695adf304 (git)
Affected: 18ea450ed1b60c1bb336f5efe874f61909ce7bec , < e9c63c0f73a1bbfd02624f5eae7e881df8b6830f (git)
Affected: 635319a4a7444ca97124d781cd96deb277ff4d40 , < 8837c2682b9b2eed83e6212bcf79850c593a6fee (git)
Affected: 635319a4a7444ca97124d781cd96deb277ff4d40 , < de78657e16f41417da9332f09c2d67d100096939 (git)
Affected: b7bf68272b6ae7c469854e2e054db1db1d158999 (git)
Affected: 5.15.33 , < 5.15.46 (semver)
Affected: 5.17.2 , < 5.17.14 (semver)
Affected: 5.16.19 , < 5.17 (semver)
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Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 5.15.46 , ≤ 5.15.* (semver)
Unaffected: 5.17.14 , ≤ 5.17.* (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/mtk_iommu.c",
            "drivers/iommu/mtk_iommu_v1.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c3c2734e28d7fac50228c4d2b8896e8695adf304",
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              "versionType": "git"
            },
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              "versionType": "git"
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              "version": "635319a4a7444ca97124d781cd96deb277ff4d40",
              "versionType": "git"
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            {
              "lessThan": "de78657e16f41417da9332f09c2d67d100096939",
              "status": "affected",
              "version": "635319a4a7444ca97124d781cd96deb277ff4d40",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b7bf68272b6ae7c469854e2e054db1db1d158999",
              "versionType": "git"
            },
            {
              "lessThan": "5.15.46",
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            {
              "lessThan": "5.17.14",
              "status": "affected",
              "version": "5.17.2",
              "versionType": "semver"
            },
            {
              "lessThan": "5.17",
              "status": "affected",
              "version": "5.16.19",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/mtk_iommu.c",
            "drivers/iommu/mtk_iommu_v1.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.46",
                  "versionStartIncluding": "5.15.33",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.14",
                  "versionStartIncluding": "5.17.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.3",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.16.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/mediatek: Fix NULL pointer dereference when printing dev_name\n\nWhen larbdev is NULL (in the case I hit, the node is incorrectly set\niommus = \u003c\u0026iommu NUM\u003e), it will cause device_link_add() fail and\nkernel crashes when we try to print dev_name(larbdev).\n\nLet\u0027s fail the probe if a larbdev is NULL to avoid invalid inputs from\ndts.\n\nIt should work for normal correct setting and avoid the crash caused\nby my incorrect setting.\n\nError log:\n[   18.189042][  T301] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000050\n...\n[   18.344519][  T301] pstate: a0400005 (NzCv daif +PAN -UAO)\n[   18.345213][  T301] pc : mtk_iommu_probe_device+0xf8/0x118 [mtk_iommu]\n[   18.346050][  T301] lr : mtk_iommu_probe_device+0xd0/0x118 [mtk_iommu]\n[   18.346884][  T301] sp : ffffffc00a5635e0\n[   18.347392][  T301] x29: ffffffc00a5635e0 x28: ffffffd44a46c1d8\n[   18.348156][  T301] x27: ffffff80c39a8000 x26: ffffffd44a80cc38\n[   18.348917][  T301] x25: 0000000000000000 x24: ffffffd44a80cc38\n[   18.349677][  T301] x23: ffffffd44e4da4c6 x22: ffffffd44a80cc38\n[   18.350438][  T301] x21: ffffff80cecd1880 x20: 0000000000000000\n[   18.351198][  T301] x19: ffffff80c439f010 x18: ffffffc00a50d0c0\n[   18.351959][  T301] x17: ffffffffffffffff x16: 0000000000000004\n[   18.352719][  T301] x15: 0000000000000004 x14: ffffffd44eb5d420\n[   18.353480][  T301] x13: 0000000000000ad2 x12: 0000000000000003\n[   18.354241][  T301] x11: 00000000fffffad2 x10: c0000000fffffad2\n[   18.355003][  T301] x9 : a0d288d8d7142d00 x8 : a0d288d8d7142d00\n[   18.355763][  T301] x7 : ffffffd44c2bc640 x6 : 0000000000000000\n[   18.356524][  T301] x5 : 0000000000000080 x4 : 0000000000000001\n[   18.357284][  T301] x3 : 0000000000000000 x2 : 0000000000000005\n[   18.358045][  T301] x1 : 0000000000000000 x0 : 0000000000000000\n[   18.360208][  T301] Hardware name: MT6873 (DT)\n[   18.360771][  T301] Call trace:\n[   18.361168][  T301]  dump_backtrace+0xf8/0x1f0\n[   18.361737][  T301]  dump_stack_lvl+0xa8/0x11c\n[   18.362305][  T301]  dump_stack+0x1c/0x2c\n[   18.362816][  T301]  mrdump_common_die+0x184/0x40c [mrdump]\n[   18.363575][  T301]  ipanic_die+0x24/0x38 [mrdump]\n[   18.364230][  T301]  atomic_notifier_call_chain+0x128/0x2b8\n[   18.364937][  T301]  die+0x16c/0x568\n[   18.365394][  T301]  __do_kernel_fault+0x1e8/0x214\n[   18.365402][  T301]  do_page_fault+0xb8/0x678\n[   18.366934][  T301]  do_translation_fault+0x48/0x64\n[   18.368645][  T301]  do_mem_abort+0x68/0x148\n[   18.368652][  T301]  el1_abort+0x40/0x64\n[   18.368660][  T301]  el1h_64_sync_handler+0x54/0x88\n[   18.368668][  T301]  el1h_64_sync+0x68/0x6c\n[   18.368673][  T301]  mtk_iommu_probe_device+0xf8/0x118 [mtk_iommu]\n..."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:22:14.313Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c3c2734e28d7fac50228c4d2b8896e8695adf304"
        },
        {
          "url": "https://git.kernel.org/stable/c/e9c63c0f73a1bbfd02624f5eae7e881df8b6830f"
        },
        {
          "url": "https://git.kernel.org/stable/c/8837c2682b9b2eed83e6212bcf79850c593a6fee"
        },
        {
          "url": "https://git.kernel.org/stable/c/de78657e16f41417da9332f09c2d67d100096939"
        }
      ],
      "title": "iommu/mediatek: Fix NULL pointer dereference when printing dev_name",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49424",
    "datePublished": "2025-02-26T02:12:46.209Z",
    "dateReserved": "2025-02-26T02:08:31.569Z",
    "dateUpdated": "2026-05-23T15:22:14.313Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49424",
      "date": "2026-09-14",
      "epss": "0.00263",
      "percentile": "0.18201"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49424\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:18.880\",\"lastModified\":\"2026-06-17T05:18:00.723\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommu/mediatek: Fix NULL pointer dereference when printing dev_name\\n\\nWhen larbdev is NULL (in the case I hit, the node is incorrectly set\\niommus = \u003c\u0026iommu NUM\u003e), it will cause device_link_add() fail and\\nkernel crashes when we try to print dev_name(larbdev).\\n\\nLet\u0027s fail the probe if a larbdev is NULL to avoid invalid inputs from\\ndts.\\n\\nIt should work for normal correct setting and avoid the crash caused\\nby my incorrect setting.\\n\\nError log:\\n[   18.189042][  T301] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000050\\n...\\n[   18.344519][  T301] pstate: a0400005 (NzCv daif +PAN -UAO)\\n[   18.345213][  T301] pc : mtk_iommu_probe_device+0xf8/0x118 [mtk_iommu]\\n[   18.346050][  T301] lr : mtk_iommu_probe_device+0xd0/0x118 [mtk_iommu]\\n[   18.346884][  T301] sp : ffffffc00a5635e0\\n[   18.347392][  T301] x29: ffffffc00a5635e0 x28: ffffffd44a46c1d8\\n[   18.348156][  T301] x27: ffffff80c39a8000 x26: ffffffd44a80cc38\\n[   18.348917][  T301] x25: 0000000000000000 x24: ffffffd44a80cc38\\n[   18.349677][  T301] x23: ffffffd44e4da4c6 x22: ffffffd44a80cc38\\n[   18.350438][  T301] x21: ffffff80cecd1880 x20: 0000000000000000\\n[   18.351198][  T301] x19: ffffff80c439f010 x18: ffffffc00a50d0c0\\n[   18.351959][  T301] x17: ffffffffffffffff x16: 0000000000000004\\n[   18.352719][  T301] x15: 0000000000000004 x14: ffffffd44eb5d420\\n[   18.353480][  T301] x13: 0000000000000ad2 x12: 0000000000000003\\n[   18.354241][  T301] x11: 00000000fffffad2 x10: c0000000fffffad2\\n[   18.355003][  T301] x9 : a0d288d8d7142d00 x8 : a0d288d8d7142d00\\n[   18.355763][  T301] x7 : ffffffd44c2bc640 x6 : 0000000000000000\\n[   18.356524][  T301] x5 : 0000000000000080 x4 : 0000000000000001\\n[   18.357284][  T301] x3 : 0000000000000000 x2 : 0000000000000005\\n[   18.358045][  T301] x1 : 0000000000000000 x0 : 0000000000000000\\n[   18.360208][  T301] Hardware name: MT6873 (DT)\\n[   18.360771][  T301] Call trace:\\n[   18.361168][  T301]  dump_backtrace+0xf8/0x1f0\\n[   18.361737][  T301]  dump_stack_lvl+0xa8/0x11c\\n[   18.362305][  T301]  dump_stack+0x1c/0x2c\\n[   18.362816][  T301]  mrdump_common_die+0x184/0x40c [mrdump]\\n[   18.363575][  T301]  ipanic_die+0x24/0x38 [mrdump]\\n[   18.364230][  T301]  atomic_notifier_call_chain+0x128/0x2b8\\n[   18.364937][  T301]  die+0x16c/0x568\\n[   18.365394][  T301]  __do_kernel_fault+0x1e8/0x214\\n[   18.365402][  T301]  do_page_fault+0xb8/0x678\\n[   18.366934][  T301]  do_translation_fault+0x48/0x64\\n[   18.368645][  T301]  do_mem_abort+0x68/0x148\\n[   18.368652][  T301]  el1_abort+0x40/0x64\\n[   18.368660][  T301]  el1h_64_sync_handler+0x54/0x88\\n[   18.368668][  T301]  el1h_64_sync+0x68/0x6c\\n[   18.368673][  T301]  mtk_iommu_probe_device+0xf8/0x118 [mtk_iommu]\\n...\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/mediatek: Arreglar la desreferencia del puntero NULL al imprimir dev_name Cuando larbdev es NULL (en el caso que encontr\u00e9, el nodo est\u00e1 configurado incorrectamente iommus = \u0026lt;\u0026amp;iommu NUM\u0026gt;), provocar\u00e1 un error en device_link_add() y el kernel se bloquea cuando intentamos imprimir dev_name(larbdev). Hagamos que falle la sonda si un larbdev es NULL para evitar entradas no v\u00e1lidas de dts. Deber\u00eda funcionar para una configuraci\u00f3n correcta normal y evitar el bloqueo causado por mi configuraci\u00f3n incorrecta. Registro de errores: [18.189042][T301] No se puede manejar la desreferencia del puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000050 ... [ 18.344519][ T301] pstate: a0400005 (NzCv daif +PAN -UAO) [ 18.345213][ T301] pc : mtk_iommu_probe_device+0xf8/0x118 [mtk_iommu] [ 18.346050][ T301] lr : mtk_iommu_probe_device+0xd0/0x118 [mtk_iommu] [ 18.346884][ T301] sp : ffffffc00a5635e0 [ 18.347392][ T301] x29: ffffffc00a5635e0 x28: ffffffd44a46c1d8 [ 18.348156][ T301] x27: ffffff80c39a8000 x26: ffffffd44a80cc38 [ 18.348917][ T301] x25: 0000000000000000 x24: ffffffd44a80cc38 [ 18.349677][ T301] x23: ffffffd44e4da4c6 x22: ffffffd44a80cc38 [ 18.350438][ T301] x21: ffffff80cecd1880 x20: 0000000000000000 [ 18.351198][ T301] x19: ffffff80c439f010 x18: ffffffc00a50d0c0 [ 18.351959][ T301] x17: ffffffffffffffff x16: 0000000000000004 [ 18.352719][ T301] x15: 0000000000000004 x14: ffffffd44eb5d420 [ 18.353480][ T301] x13: 0000000000000ad2 x12: 0000000000000003 [ 18.354241][ T301] x11: 00000000fffffad2 x10: c0000000fffffad2 [ 18.355003][ T301] x9 : a0d288d8d7142d00 x8 : a0d288d8d7142d00 [ 18.355763][ T301] x7 : ffffffd44c2bc640 x6 : 0000000000000000 [ 18.356524][ T301] x5 : 0000000000000080 x4 : 0000000000000001 [ 18.357284][ T301] x3 : 0000000000000000 x2 : 0000000000000005 [ 18.358045][ T301] x1 : 0000000000000000 x0 : 0000000000000000 [ 18.360208][ T301] Hardware name: MT6873 (DT) [ 18.360771][ T301] Call trace: [ 18.361168][ T301] dump_backtrace+0xf8/0x1f0 [ 18.361737][ T301] dump_stack_lvl+0xa8/0x11c [ 18.362305][ T301] dump_stack+0x1c/0x2c [ 18.362816][ T301] mrdump_common_die+0x184/0x40c [mrdump] [ 18.363575][ T301] ipanic_die+0x24/0x38 [mrdump] [ 18.364230][ T301] atomic_notifier_call_chain+0x128/0x2b8 [ 18.364937][ T301] die+0x16c/0x568 [ 18.365394][ T301] __do_kernel_fault+0x1e8/0x214 [ 18.365402][ T301] do_page_fault+0xb8/0x678 [ 18.366934][ T301] do_translation_fault+0x48/0x64 [ 18.368645][ T301] do_mem_abort+0x68/0x148 [ 18.368652][ T301] el1_abort+0x40/0x64 [ 18.368660][ T301] el1h_64_sync_handler+0x54/0x88 [ 18.368668][ T301] el1h_64_sync+0x68/0x6c [ 18.368673][ T301] mtk_iommu_probe_device+0xf8/0x118 [mtk_iommu] ... \"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/iommu/mtk_iommu.c\",\"drivers/iommu/mtk_iommu_v1.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"77fbe028d5a3f7fc6060c4454ead9510533acd1e\",\"lessThan\":\"c3c2734e28d7fac50228c4d2b8896e8695adf304\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18ea450ed1b60c1bb336f5efe874f61909ce7bec\",\"lessThan\":\"e9c63c0f73a1bbfd02624f5eae7e881df8b6830f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"635319a4a7444ca97124d781cd96deb277ff4d40\",\"lessThan\":\"8837c2682b9b2eed83e6212bcf79850c593a6fee\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"635319a4a7444ca97124d781cd96deb277ff4d40\",\"lessThan\":\"de78657e16f41417da9332f09c2d67d100096939\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b7bf68272b6ae7c469854e2e054db1db1d158999\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.15.33\",\"lessThan\":\"5.15.46\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.17.2\",\"lessThan\":\"5.17.14\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.16.19\",\"lessThan\":\"5.17\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/iommu/mtk_iommu.c\",\"drivers/iommu/mtk_iommu_v1.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.18\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.18\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.46\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17.14\",\"lessThanOrEqual\":\"5.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18.3\",\"lessThanOrEqual\":\"5.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15.33\",\"versionEndExcluding\":\"5.15.46\",\"matchCriteriaId\":\"24166EC9-810C-49CA-B9C8-F22E779CA9A3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16.19\",\"versionEndExcluding\":\"5.17\",\"matchCriteriaId\":\"D4ED89FC-18EE-445F-8FE2-A2B6A5F9BB13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.17.2\",\"versionEndExcluding\":\"5.17.14\",\"matchCriteriaId\":\"E9FB70EE-3E5E-4DE4-ADA4-96A55A0154D0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"5.18.3\",\"matchCriteriaId\":\"8E122216-2E9E-4B3E-B7B8-D575A45BA3C2\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/8837c2682b9b2eed83e6212bcf79850c593a6fee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c3c2734e28d7fac50228c4d2b8896e8695adf304\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/de78657e16f41417da9332f09c2d67d100096939\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e9c63c0f73a1bbfd02624f5eae7e881df8b6830f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:37:37+00:00",
      "cve": "CVE-2022-49424",
      "id": "CVE-2022-49424",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iommu/mediatek: Fix NULL pointer dereference when printing dev_name",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49424.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T16:54:39Z",
      "cve": "CVE-2022-49424",
      "id": "CVE-2022-49424",
      "initial_release_date": "2025-02-27T03:07:08Z",
      "product_status:known_affected": "334",
      "product_status:known_not_affected": "401",
      "product_status:recommended": "223",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49424",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49424.json",
      "version": "48"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.