{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2022-49021",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49021",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2024-10-21T20:06:28.608Z",
    "updatedAt": "2026-05-11T18:51:40.589Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "net: phy: fix null-ptr-deref while probe() failed",
      "summary": "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": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "e13934563db047043ccead26412f552375cea90c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8aaafe0f71314f46a066382a047ba8bb3840d273"
            },
            {
              "version": "e13934563db047043ccead26412f552375cea90c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "51d7f6b20fae8bae64ad1136f1e30d1fd5ba78f7"
            },
            {
              "version": "e13934563db047043ccead26412f552375cea90c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0744c7be4de564db03e24527b2e096b7e0e20972"
            },
            {
              "version": "e13934563db047043ccead26412f552375cea90c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3e21f85d87c836462bb52ef2078ea561260935c1"
            },
            {
              "version": "e13934563db047043ccead26412f552375cea90c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fe6bc99c27c21348f548966118867ed26a9a372c"
            },
            {
              "version": "e13934563db047043ccead26412f552375cea90c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7730904f50c7187dd16c76949efb56b5fb55cd57"
            },
            {
              "version": "e13934563db047043ccead26412f552375cea90c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "eaa5722549ac2604ffa56c2e946acc83226f130c"
            },
            {
              "version": "e13934563db047043ccead26412f552375cea90c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "369eb2c9f1f72adbe91e0ea8efb130f0a2ba11a6"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.14",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.14"
            },
            {
              "version": "4.9.335",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "version": "4.14.301",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.268",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.226",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.82",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.0.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "version": "6.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}