FKIE_CVE-2021-47027

Vulnerability from fkie_nvd - Published: 2024-02-28 09:15 - Updated: 2026-06-17 04:16
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: mt76: mt7921: fix kernel crash when the firmware fails to download Fix kernel crash when the firmware is missing or fails to download. [ 9.444758] kernel BUG at drivers/pci/msi.c:375! [ 9.449363] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP [ 9.501033] pstate: a0400009 (NzCv daif +PAN -UAO) [ 9.505814] pc : free_msi_irqs+0x180/0x184 [ 9.509897] lr : free_msi_irqs+0x40/0x184 [ 9.513893] sp : ffffffc015193870 [ 9.517194] x29: ffffffc015193870 x28: 00000000f0e94fa2 [ 9.522492] x27: 0000000000000acd x26: 000000000000009a [ 9.527790] x25: ffffffc0152cee58 x24: ffffffdbb383e0d8 [ 9.533087] x23: ffffffdbb38628d0 x22: 0000000000040200 [ 9.538384] x21: ffffff8cf7de7318 x20: ffffff8cd65a2480 [ 9.543681] x19: ffffff8cf7de7000 x18: 0000000000000000 [ 9.548979] x17: ffffff8cf9ca03b4 x16: ffffffdc13ad9a34 [ 9.554277] x15: 0000000000000000 x14: 0000000000080800 [ 9.559575] x13: ffffff8cd65a2980 x12: 0000000000000000 [ 9.564873] x11: ffffff8cfa45d820 x10: ffffff8cfa45d6d0 [ 9.570171] x9 : 0000000000000040 x8 : ffffff8ccef1b780 [ 9.575469] x7 : aaaaaaaaaaaaaaaa x6 : 0000000000000000 [ 9.580766] x5 : ffffffdc13824900 x4 : ffffff8ccefe0000 [ 9.586063] x3 : 0000000000000000 x2 : 0000000000000000 [ 9.591362] x1 : 0000000000000125 x0 : ffffff8ccefe0000 [ 9.596660] Call trace: [ 9.599095] free_msi_irqs+0x180/0x184 [ 9.602831] pci_disable_msi+0x100/0x130 [ 9.606740] pci_free_irq_vectors+0x24/0x30 [ 9.610915] mt7921_pci_probe+0xbc/0x250 [mt7921e] [ 9.615693] pci_device_probe+0xd4/0x14c [ 9.619604] really_probe+0x134/0x2ec [ 9.623252] driver_probe_device+0x64/0xfc [ 9.627335] device_driver_attach+0x4c/0x6c [ 9.631506] __driver_attach+0xac/0xc0 [ 9.635243] bus_for_each_dev+0x8c/0xd4 [ 9.639066] driver_attach+0x2c/0x38 [ 9.642628] bus_add_driver+0xfc/0x1d0 [ 9.646365] driver_register+0x64/0xf8 [ 9.650101] __pci_register_driver+0x6c/0x7c [ 9.654360] init_module+0x28/0xfdc [mt7921e] [ 9.658704] do_one_initcall+0x13c/0x2d0 [ 9.662615] do_init_module+0x58/0x1e8 [ 9.666351] load_module+0xd80/0xeb4 [ 9.669912] __arm64_sys_finit_module+0xa8/0xe0 [ 9.674430] el0_svc_common+0xa4/0x16c [ 9.678168] el0_svc_compat_handler+0x2c/0x40 [ 9.682511] el0_svc_compat+0x8/0x10 [ 9.686076] Code: a94257f6 f9400bf7 a8c47bfd d65f03c0 (d4210000) [ 9.692155] ---[ end trace 7621f966afbf0a29 ]--- [ 9.697385] Kernel panic - not syncing: Fatal exception [ 9.702599] SMP: stopping secondary CPUs [ 9.706549] Kernel Offset: 0x1c03600000 from 0xffffffc010000000 [ 9.712456] PHYS_OFFSET: 0xfffffff440000000 [ 9.716625] CPU features: 0x080026,2a80aa18 [ 9.720795] Memory Limit: none
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a46b536cd60c0dbd4bf767c62a8774dec52bf099Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e230f0c44f011f3270680a506b19b7e84c5e8923Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a46b536cd60c0dbd4bf767c62a8774dec52bf099Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e230f0c44f011f3270680a506b19b7e84c5e8923Patch
Impacted products
Vendor Product Version
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7921/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a46b536cd60c0dbd4bf767c62a8774dec52bf099",
              "status": "affected",
              "version": "5c14a5f944b91371961548b1907802f74a4d2e5c",
              "versionType": "git"
            },
            {
              "lessThan": "e230f0c44f011f3270680a506b19b7e84c5e8923",
              "status": "affected",
              "version": "5c14a5f944b91371961548b1907802f74a4d2e5c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7921/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "lessThan": "5.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D8C7052F-1B7B-4327-9C2B-84EBF3243838",
              "versionEndExcluding": "5.12.4",
              "versionStartIncluding": "5.12",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmt76: mt7921: fix kernel crash when the firmware fails to download\n\nFix kernel crash when the firmware is missing or fails to download.\n\n[    9.444758] kernel BUG at drivers/pci/msi.c:375!\n[    9.449363] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP\n[    9.501033] pstate: a0400009 (NzCv daif +PAN -UAO)\n[    9.505814] pc : free_msi_irqs+0x180/0x184\n[    9.509897] lr : free_msi_irqs+0x40/0x184\n[    9.513893] sp : ffffffc015193870\n[    9.517194] x29: ffffffc015193870 x28: 00000000f0e94fa2\n[    9.522492] x27: 0000000000000acd x26: 000000000000009a\n[    9.527790] x25: ffffffc0152cee58 x24: ffffffdbb383e0d8\n[    9.533087] x23: ffffffdbb38628d0 x22: 0000000000040200\n[    9.538384] x21: ffffff8cf7de7318 x20: ffffff8cd65a2480\n[    9.543681] x19: ffffff8cf7de7000 x18: 0000000000000000\n[    9.548979] x17: ffffff8cf9ca03b4 x16: ffffffdc13ad9a34\n[    9.554277] x15: 0000000000000000 x14: 0000000000080800\n[    9.559575] x13: ffffff8cd65a2980 x12: 0000000000000000\n[    9.564873] x11: ffffff8cfa45d820 x10: ffffff8cfa45d6d0\n[    9.570171] x9 : 0000000000000040 x8 : ffffff8ccef1b780\n[    9.575469] x7 : aaaaaaaaaaaaaaaa x6 : 0000000000000000\n[    9.580766] x5 : ffffffdc13824900 x4 : ffffff8ccefe0000\n[    9.586063] x3 : 0000000000000000 x2 : 0000000000000000\n[    9.591362] x1 : 0000000000000125 x0 : ffffff8ccefe0000\n[    9.596660] Call trace:\n[    9.599095]  free_msi_irqs+0x180/0x184\n[    9.602831]  pci_disable_msi+0x100/0x130\n[    9.606740]  pci_free_irq_vectors+0x24/0x30\n[    9.610915]  mt7921_pci_probe+0xbc/0x250 [mt7921e]\n[    9.615693]  pci_device_probe+0xd4/0x14c\n[    9.619604]  really_probe+0x134/0x2ec\n[    9.623252]  driver_probe_device+0x64/0xfc\n[    9.627335]  device_driver_attach+0x4c/0x6c\n[    9.631506]  __driver_attach+0xac/0xc0\n[    9.635243]  bus_for_each_dev+0x8c/0xd4\n[    9.639066]  driver_attach+0x2c/0x38\n[    9.642628]  bus_add_driver+0xfc/0x1d0\n[    9.646365]  driver_register+0x64/0xf8\n[    9.650101]  __pci_register_driver+0x6c/0x7c\n[    9.654360]  init_module+0x28/0xfdc [mt7921e]\n[    9.658704]  do_one_initcall+0x13c/0x2d0\n[    9.662615]  do_init_module+0x58/0x1e8\n[    9.666351]  load_module+0xd80/0xeb4\n[    9.669912]  __arm64_sys_finit_module+0xa8/0xe0\n[    9.674430]  el0_svc_common+0xa4/0x16c\n[    9.678168]  el0_svc_compat_handler+0x2c/0x40\n[    9.682511]  el0_svc_compat+0x8/0x10\n[    9.686076] Code: a94257f6 f9400bf7 a8c47bfd d65f03c0 (d4210000)\n[    9.692155] ---[ end trace 7621f966afbf0a29 ]---\n[    9.697385] Kernel panic - not syncing: Fatal exception\n[    9.702599] SMP: stopping secondary CPUs\n[    9.706549] Kernel Offset: 0x1c03600000 from 0xffffffc010000000\n[    9.712456] PHYS_OFFSET: 0xfffffff440000000\n[    9.716625] CPU features: 0x080026,2a80aa18\n[    9.720795] Memory Limit: none"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mt76: mt7921: soluciona el fallo del kernel cuando no se puede descargar el firmware. Se soluciona el fallo del kernel cuando falta el firmware o no se puede descargar. [9.444758] \u00a1ERROR del kernel en drivers/pci/msi.c:375! [0 x40/ 0x184 [ 9.513893] sp : ffffffc015193870 [ 9.517194] x29: ffffffc015193870 x28: 00000000f0e94fa2 [ 9.522492] x27: 0000000000000acd x26: 000000 000000009a [ 9.527790] x25: ffffffc0152cee58 x24: ffffffdbb383e0d8 [ 9.533087] x23: ffffffdbb38628d0 x22: 0000000000040200 [ 9.538384] x21: ffffff8cf 7de7318 x20 : ffffff8cd65a2480 [ 9.543681] x19: ffffff8cf7de7000 x18: 0000000000000000 [ 9.548979] x17: ffffff8cf9ca03b4 x16: ffffffdc13ad9a34 [ 9.554277] x15: 00 00000000000000 x14: 0000000000080800 [ 9.559575] x13: ffffff8cd65a2980 x12: 00000000000000000 [ 9.564873] x11: ffffff8cfa45d820 x10: ffffff8cfa45 d6d0 [9.570171] X9: 000000000000000040 X8: FFFFFF8CCEF1B780 [9.575469] x7: aaaaaaaaaaaaaaaaa X6: 00000000000000000000 [9.580766] x5: fffffffdc13824900 x4: fffff8ce 00000000000000 x2: 000000000000000000 [9.591362] X1: 000000000000000125 X0: FFFFFFF8CCEFE0000 [9.596660] Llame Trace: [9.599095 ] free_msi_irqs+0x180/0x184 [ 9.602831] pci_disable_msi+0x100/0x130 [ 9.606740] pci_free_irq_vectors+0x24/0x30 [ 9.610915] mt7921_pci_probe+0xbc/0x250 [mt7921 e] [ 9.615693] pci_device_probe+0xd4/0x14c [ 9.619604] very_probe+0x134/0x2ec [ 9.623252] driver_probe_device+0x64/0xfc [ 9.627335] dispositivo_driver_attach+0x4c/0x6c [ 9.631506] __driver_attach+0xac/0xc0 [ 9.635243] bus_for_each_dev+0x8c/0xd4 [ 9.639066] driver_ adjuntar+0x2c/0x38 [ 9.642628] bus_add_driver+0xfc/0x1d0 [ 9.646365] driver_register+0x64/0xf8 [ 9.650101] __pci_register_driver+0x6c/0x7c [ 9.654360] init_module+0x28/0xfdc [mt7921e] [ 9.658704] do_one_initcall+0x13c/0x2d0 [ 9.662615] do_ m\u00f3dulo_init+0x58/0x1e8 [ 9.666351] m\u00f3dulo_carga+0xd80/0xeb4 [ 9.669912 ] __arm64_sys_finit_module+0xa8/0xe0 [ 9.674430] el0_svc_common+0xa4/0x16c [ 9.678168] el0_svc_compat_handler+0x2c/0x40 [ 9.682511] el0_svc_compat+0x8/0x10 [ 9.68 6076] C\u00f3digo: a94257f6 f9400bf7 a8c47bfd d65f03c0 (d4210000) [ 9.692155] ---[ fin trace 7621f966afbf0a29 ]--- [ 9.697385] P\u00e1nico del kernel: no se sincroniza: excepci\u00f3n grave [ 9.702599] SMP: detenci\u00f3n de CPU secundarias [ 9.706549] Compensaci\u00f3n del kernel: 0x1c03600000 de 0xffffffc010000000 [ 9.712456] PHYS_OFF CONJUNTO: 0xffffff440000000 [9.716625] Caracter\u00edsticas de la CPU: 0x080026,2a80aa18 [ 9.720795] L\u00edmite de memoria: ninguno"
    }
  ],
  "id": "CVE-2021-47027",
  "lastModified": "2026-06-17T04:16:14.183",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47027",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-02-28T20:24:56.227062Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-02-28T09:15:39.383",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a46b536cd60c0dbd4bf767c62a8774dec52bf099"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e230f0c44f011f3270680a506b19b7e84c5e8923"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a46b536cd60c0dbd4bf767c62a8774dec52bf099"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e230f0c44f011f3270680a506b19b7e84c5e8923"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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