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            "url": "https://git.kernel.org/stable/c/f53a2ce893b2c7884ef94471f170839170a4eba0"
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        ],
        "title": "CVE Program Container"
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      {
        "metrics": [
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            "other": {
              "content": {
                "id": "CVE-2022-48818",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
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          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/dsa/mv88e6xxx/chip.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8ccebe77df6e0d88c72ba5e69cf1835927e53b6c",
              "status": "affected",
              "version": "ac3a68d56651c3dad2c12c7afce065fe15267f44",
              "versionType": "git"
            },
            {
              "lessThan": "8b626d45127d6f5ada7d815b83cfdc09e8cb1394",
              "status": "affected",
              "version": "ac3a68d56651c3dad2c12c7afce065fe15267f44",
              "versionType": "git"
            },
            {
              "lessThan": "1b451c3994a2d322f8e55032c62c8b47b7d95900",
              "status": "affected",
              "version": "ac3a68d56651c3dad2c12c7afce065fe15267f44",
              "versionType": "git"
            },
            {
              "lessThan": "f53a2ce893b2c7884ef94471f170839170a4eba0",
              "status": "affected",
              "version": "ac3a68d56651c3dad2c12c7afce065fe15267f44",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/dsa/mv88e6xxx/chip.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.101",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.24",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.16.10",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: mv88e6xxx: don\u0027t use devres for mdiobus\n\nAs explained in commits:\n74b6d7d13307 (\"net: dsa: realtek: register the MDIO bus under devres\")\n5135e96a3dd2 (\"net: dsa: don\u0027t allocate the slave_mii_bus using devres\")\n\nmdiobus_free() will panic when called from devm_mdiobus_free() \u003c-\ndevres_release_all() \u003c- __device_release_driver(), and that mdiobus was\nnot previously unregistered.\n\nThe mv88e6xxx is an MDIO device, so the initial set of constraints that\nI thought would cause this (I2C or SPI buses which call -\u003eremove on\n-\u003eshutdown) do not apply. But there is one more which applies here.\n\nIf the DSA master itself is on a bus that calls -\u003eremove from -\u003eshutdown\n(like dpaa2-eth, which is on the fsl-mc bus), there is a device link\nbetween the switch and the DSA master, and device_links_unbind_consumers()\nwill unbind the Marvell switch driver on shutdown.\n\nsystemd-shutdown[1]: Powering off.\nmv88e6085 0x0000000008b96000:00 sw_gl0: Link is Down\nfsl-mc dpbp.9: Removing from iommu group 7\nfsl-mc dpbp.8: Removing from iommu group 7\n------------[ cut here ]------------\nkernel BUG at drivers/net/phy/mdio_bus.c:677!\nInternal error: Oops - BUG: 0 [#1] PREEMPT SMP\nModules linked in:\nCPU: 0 PID: 1 Comm: systemd-shutdow Not tainted 5.16.5-00040-gdc05f73788e5 #15\npc : mdiobus_free+0x44/0x50\nlr : devm_mdiobus_free+0x10/0x20\nCall trace:\n mdiobus_free+0x44/0x50\n devm_mdiobus_free+0x10/0x20\n devres_release_all+0xa0/0x100\n __device_release_driver+0x190/0x220\n device_release_driver_internal+0xac/0xb0\n device_links_unbind_consumers+0xd4/0x100\n __device_release_driver+0x4c/0x220\n device_release_driver_internal+0xac/0xb0\n device_links_unbind_consumers+0xd4/0x100\n __device_release_driver+0x94/0x220\n device_release_driver+0x28/0x40\n bus_remove_device+0x118/0x124\n device_del+0x174/0x420\n fsl_mc_device_remove+0x24/0x40\n __fsl_mc_device_remove+0xc/0x20\n device_for_each_child+0x58/0xa0\n dprc_remove+0x90/0xb0\n fsl_mc_driver_remove+0x20/0x5c\n __device_release_driver+0x21c/0x220\n device_release_driver+0x28/0x40\n bus_remove_device+0x118/0x124\n device_del+0x174/0x420\n fsl_mc_bus_remove+0x80/0x100\n fsl_mc_bus_shutdown+0xc/0x1c\n platform_shutdown+0x20/0x30\n device_shutdown+0x154/0x330\n kernel_power_off+0x34/0x6c\n __do_sys_reboot+0x15c/0x250\n __arm64_sys_reboot+0x20/0x30\n invoke_syscall.constprop.0+0x4c/0xe0\n do_el0_svc+0x4c/0x150\n el0_svc+0x24/0xb0\n el0t_64_sync_handler+0xa8/0xb0\n el0t_64_sync+0x178/0x17c\n\nSo the same treatment must be applied to all DSA switch drivers, which\nis: either use devres for both the mdiobus allocation and registration,\nor don\u0027t use devres at all.\n\nThe Marvell driver already has a good structure for mdiobus removal, so\njust plug in mdiobus_free and get rid of devres."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:23:58.995Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8ccebe77df6e0d88c72ba5e69cf1835927e53b6c"
        },
        {
          "url": "https://git.kernel.org/stable/c/8b626d45127d6f5ada7d815b83cfdc09e8cb1394"
        },
        {
          "url": "https://git.kernel.org/stable/c/1b451c3994a2d322f8e55032c62c8b47b7d95900"
        },
        {
          "url": "https://git.kernel.org/stable/c/f53a2ce893b2c7884ef94471f170839170a4eba0"
        }
      ],
      "title": "net: dsa: mv88e6xxx: don\u0027t use devres for mdiobus",
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48818",
    "datePublished": "2024-07-16T11:44:05.957Z",
    "dateReserved": "2024-07-16T11:38:08.900Z",
    "dateUpdated": "2025-05-04T08:23:58.995Z",
    "state": "PUBLISHED"
  },
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}