{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phy: fix null-ptr-deref while probe() failed\n\nI got a null-ptr-deref report as following when doing fault injection test:\n\nBUG: kernel NULL pointer dereference, address: 0000000000000058\nOops: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 1 PID: 253 Comm: 507-spi-dm9051 Tainted: G    B            N 6.1.0-rc3+\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\nRIP: 0010:klist_put+0x2d/0xd0\nCall Trace:\n <TASK>\n klist_remove+0xf1/0x1c0\n device_release_driver_internal+0x23e/0x2d0\n bus_remove_device+0x1bd/0x240\n device_del+0x357/0x770\n phy_device_remove+0x11/0x30\n mdiobus_unregister+0xa5/0x140\n release_nodes+0x6a/0xa0\n devres_release_all+0xf8/0x150\n device_unbind_cleanup+0x19/0xd0\n\n//probe path:\nphy_device_register()\n  device_add()\n\nphy_connect\n  phy_attach_direct() //set device driver\n    probe() //it's failed, driver is not bound\n    device_bind_driver() // probe failed, it's not called\n\n//remove path:\nphy_device_remove()\n  device_del()\n    device_release_driver_internal()\n      __device_release_driver() //dev->drv is not NULL\n        klist_remove() <- knode_driver is not added yet, cause null-ptr-deref\n\nIn phy_attach_direct(), after setting the 'dev->driver', probe() fails,\ndevice_bind_driver() is not called, so the knode_driver->n_klist is not\nset, then it causes null-ptr-deref in __device_release_driver() while\ndeleting device. Fix this by setting dev->driver to NULL in the error\npath in phy_attach_direct()."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/phy/phy_device.c"
               ],
               "versions": [
                  {
                     "version": "e13934563db0",
                     "lessThan": "8aaafe0f7131",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "e13934563db0",
                     "lessThan": "51d7f6b20fae",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "e13934563db0",
                     "lessThan": "0744c7be4de5",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "e13934563db0",
                     "lessThan": "3e21f85d87c8",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "e13934563db0",
                     "lessThan": "fe6bc99c27c2",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "e13934563db0",
                     "lessThan": "7730904f50c7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "e13934563db0",
                     "lessThan": "eaa5722549ac",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "e13934563db0",
                     "lessThan": "369eb2c9f1f7",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/phy/phy_device.c"
               ],
               "versions": [
                  {
                     "version": "2.6.14",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "2.6.14",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.9.335",
                     "lessThanOrEqual": "4.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.14.301",
                     "lessThanOrEqual": "4.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.268",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.226",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.158",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.82",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.0.12",
                     "lessThanOrEqual": "6.0.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/8aaafe0f71314f46a066382a047ba8bb3840d273"
            },
            {
               "url": "https://git.kernel.org/stable/c/51d7f6b20fae8bae64ad1136f1e30d1fd5ba78f7"
            },
            {
               "url": "https://git.kernel.org/stable/c/0744c7be4de564db03e24527b2e096b7e0e20972"
            },
            {
               "url": "https://git.kernel.org/stable/c/3e21f85d87c836462bb52ef2078ea561260935c1"
            },
            {
               "url": "https://git.kernel.org/stable/c/fe6bc99c27c21348f548966118867ed26a9a372c"
            },
            {
               "url": "https://git.kernel.org/stable/c/7730904f50c7187dd16c76949efb56b5fb55cd57"
            },
            {
               "url": "https://git.kernel.org/stable/c/eaa5722549ac2604ffa56c2e946acc83226f130c"
            },
            {
               "url": "https://git.kernel.org/stable/c/369eb2c9f1f72adbe91e0ea8efb130f0a2ba11a6"
            }
         ],
         "title": "net: phy: fix null-ptr-deref while probe() failed",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2022-49021",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}