cve-2022-49021
Vulnerability from cvelistv5
Published
2024-10-21 20:06
Modified
2024-12-19 08:12
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: phy: fix null-ptr-deref while probe() failed I got a null-ptr-deref report as following when doing fault injection test: BUG: kernel NULL pointer dereference, address: 0000000000000058 Oops: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 PID: 253 Comm: 507-spi-dm9051 Tainted: G B N 6.1.0-rc3+ Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: 0010:klist_put+0x2d/0xd0 Call Trace: <TASK> klist_remove+0xf1/0x1c0 device_release_driver_internal+0x23e/0x2d0 bus_remove_device+0x1bd/0x240 device_del+0x357/0x770 phy_device_remove+0x11/0x30 mdiobus_unregister+0xa5/0x140 release_nodes+0x6a/0xa0 devres_release_all+0xf8/0x150 device_unbind_cleanup+0x19/0xd0 //probe path: phy_device_register() device_add() phy_connect phy_attach_direct() //set device driver probe() //it's failed, driver is not bound device_bind_driver() // probe failed, it's not called //remove path: phy_device_remove() device_del() device_release_driver_internal() __device_release_driver() //dev->drv is not NULL klist_remove() <- knode_driver is not added yet, cause null-ptr-deref In phy_attach_direct(), after setting the 'dev->driver', probe() fails, device_bind_driver() is not called, so the knode_driver->n_klist is not set, then it causes null-ptr-deref in __device_release_driver() while deleting device. Fix this by setting dev->driver to NULL in the error path in phy_attach_direct().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0744c7be4de564db03e24527b2e096b7e0e20972Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/369eb2c9f1f72adbe91e0ea8efb130f0a2ba11a6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3e21f85d87c836462bb52ef2078ea561260935c1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/51d7f6b20fae8bae64ad1136f1e30d1fd5ba78f7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7730904f50c7187dd16c76949efb56b5fb55cd57Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8aaafe0f71314f46a066382a047ba8bb3840d273Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eaa5722549ac2604ffa56c2e946acc83226f130cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fe6bc99c27c21348f548966118867ed26a9a372cPatch
Impacted products
Vendor Product Version
Linux Linux Version: e13934563db047043ccead26412f552375cea90c
Version: e13934563db047043ccead26412f552375cea90c
Version: e13934563db047043ccead26412f552375cea90c
Version: e13934563db047043ccead26412f552375cea90c
Version: e13934563db047043ccead26412f552375cea90c
Version: e13934563db047043ccead26412f552375cea90c
Version: e13934563db047043ccead26412f552375cea90c
Version: e13934563db047043ccead26412f552375cea90c
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   Linux Linux Version: 2.6.14
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                "id": "CVE-2022-49021",
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          "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 \u003cTASK\u003e\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\u0027s failed, driver is not bound\n    device_bind_driver() // probe failed, it\u0027s not called\n\n//remove path:\nphy_device_remove()\n  device_del()\n    device_release_driver_internal()\n      __device_release_driver() //dev-\u003edrv is not NULL\n        klist_remove() \u003c- knode_driver is not added yet, cause null-ptr-deref\n\nIn phy_attach_direct(), after setting the \u0027dev-\u003edriver\u0027, probe() fails,\ndevice_bind_driver() is not called, so the knode_driver-\u003en_klist is not\nset, then it causes null-ptr-deref in __device_release_driver() while\ndeleting device. Fix this by setting dev-\u003edriver to NULL in the error\npath in phy_attach_direct()."
        }
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    "datePublished": "2024-10-21T20:06:28.608Z",
    "dateReserved": "2024-08-22T01:27:53.649Z",
    "dateUpdated": "2024-12-19T08:12:35.902Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49021\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T20:15:13.163\",\"lastModified\":\"2024-10-24T18:44:24.567\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"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 \u003cTASK\u003e\\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\u0027s failed, driver is not bound\\n    device_bind_driver() // probe failed, it\u0027s not called\\n\\n//remove path:\\nphy_device_remove()\\n  device_del()\\n    device_release_driver_internal()\\n      __device_release_driver() //dev-\u003edrv is not NULL\\n        klist_remove() \u003c- knode_driver is not added yet, cause null-ptr-deref\\n\\nIn phy_attach_direct(), after setting the \u0027dev-\u003edriver\u0027, probe() fails,\\ndevice_bind_driver() is not called, so the knode_driver-\u003en_klist is not\\nset, then it causes null-ptr-deref in __device_release_driver() while\\ndeleting device. Fix this by setting dev-\u003edriver to NULL in the error\\npath in phy_attach_direct().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: phy: fix null-ptr-deref while probe() failed Obtuve un informe null-ptr-deref como el siguiente al realizar la prueba de inyecci\u00f3n de fallos: ERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000058 Oops: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 PID: 253 Comm: 507-spi-dm9051 Tainted: GBN 6.1.0-rc3+ Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: 0010:klist_put+0x2d/0xd0 Rastreo de llamadas:  klist_remove+0xf1/0x1c0 device_release_driver_internal+0x23e/0x2d0 bus_remove_device+0x1bd/0x240 device_del+0x357/0x770 phy_device_remove+0x11/0x30 mdiobus_unregister+0xa5/0x140 release_nodes+0x6a/0xa0 devres_release_all+0xf8/0x150 device_unbind_cleanup+0x19/0xd0 //ruta de la sonda: phy_device_register() device_add() phy_connect phy_attach_direct() //establecer el controlador del dispositivo probe() //ha fallodo, el controlador no est\u00e1 vinculado device_bind_driver() //la sonda ha fallodo, no se llama //ruta de eliminaci\u00f3n: phy_device_remove() device_del() device_release_driver_internal() __device_release_driver() //dev-\u0026gt;drv no es NULL klist_remove() \u0026lt;- knode_driver a\u00fan no se agreg\u00f3, causa null-ptr-deref En phy_attach_direct(), despu\u00e9s de configurar \u0027dev-\u0026gt;driver\u0027, probe() fallo, device_bind_driver() no se llama, por lo que knode_driver-\u0026gt;n_klist no est\u00e1 configurado, luego causa null-ptr-deref en __device_release_driver() mientras se elimina el dispositivo. Solucione esto configurando dev-\u0026gt;driver en NULL en la ruta de error en phy_attach_direct().\"}],\"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\":\"2.6.14\",\"versionEndExcluding\":\"4.9.335\",\"matchCriteriaId\":\"DF95240D-8688-4572-B73C-F0DC8473CE27\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.301\",\"matchCriteriaId\":\"0EE18A3A-1E78-44D6-9FDB-B267E4819993\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.268\",\"matchCriteriaId\":\"04705C94-71FA-46AB-AF73-B551892B0EBA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.226\",\"matchCriteriaId\":\"274F5087-5805-4D03-8C74-8517300658F1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.158\",\"matchCriteriaId\":\"D0FB1AF1-0A0B-4419-B25F-C61F17380E18\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.82\",\"matchCriteriaId\":\"0DC20DB6-73C1-4465-B931-117BFB8EBB02\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.0.12\",\"matchCriteriaId\":\"D6D56E90-F3EE-413D-B3E2-B518932F0C7D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"E7E331DA-1FB0-4DEC-91AC-7DA69D461C11\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"17F0B248-42CF-4AE6-A469-BB1BAE7F4705\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E2422816-0C14-4B5E-A1E6-A9D776E5C49B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"35B26BE4-43A6-4A36-A7F6-5B3F572D9186\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"3FFFB0B3-930D-408A-91E2-BAE0C2715D80\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"8535320E-A0DB-4277-800E-D0CE5BBA59E8\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0744c7be4de564db03e24527b2e096b7e0e20972\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/369eb2c9f1f72adbe91e0ea8efb130f0a2ba11a6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3e21f85d87c836462bb52ef2078ea561260935c1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/51d7f6b20fae8bae64ad1136f1e30d1fd5ba78f7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7730904f50c7187dd16c76949efb56b5fb55cd57\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8aaafe0f71314f46a066382a047ba8bb3840d273\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/eaa5722549ac2604ffa56c2e946acc83226f130c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fe6bc99c27c21348f548966118867ed26a9a372c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49021\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:12:34.199961Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:12:37.801Z\"}}], \"cna\": {\"title\": \"net: phy: fix null-ptr-deref while probe() failed\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"e13934563db047043ccead26412f552375cea90c\", \"lessThan\": \"8aaafe0f71314f46a066382a047ba8bb3840d273\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e13934563db047043ccead26412f552375cea90c\", \"lessThan\": \"51d7f6b20fae8bae64ad1136f1e30d1fd5ba78f7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e13934563db047043ccead26412f552375cea90c\", \"lessThan\": \"0744c7be4de564db03e24527b2e096b7e0e20972\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e13934563db047043ccead26412f552375cea90c\", \"lessThan\": \"3e21f85d87c836462bb52ef2078ea561260935c1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e13934563db047043ccead26412f552375cea90c\", \"lessThan\": \"fe6bc99c27c21348f548966118867ed26a9a372c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e13934563db047043ccead26412f552375cea90c\", \"lessThan\": \"7730904f50c7187dd16c76949efb56b5fb55cd57\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e13934563db047043ccead26412f552375cea90c\", \"lessThan\": \"eaa5722549ac2604ffa56c2e946acc83226f130c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e13934563db047043ccead26412f552375cea90c\", \"lessThan\": \"369eb2c9f1f72adbe91e0ea8efb130f0a2ba11a6\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/phy/phy_device.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.14\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.14\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.9.335\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.9.*\"}, {\"status\": \"unaffected\", \"version\": \"4.14.301\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.268\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.226\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.158\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.82\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/phy/phy_device.c\"], \"defaultStatus\": \"affected\"}], \"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\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"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 \u003cTASK\u003e\\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\u0027s failed, driver is not bound\\n    device_bind_driver() // probe failed, it\u0027s not called\\n\\n//remove path:\\nphy_device_remove()\\n  device_del()\\n    device_release_driver_internal()\\n      __device_release_driver() //dev-\u003edrv is not NULL\\n        klist_remove() \u003c- knode_driver is not added yet, cause null-ptr-deref\\n\\nIn phy_attach_direct(), after setting the \u0027dev-\u003edriver\u0027, probe() fails,\\ndevice_bind_driver() is not called, so the knode_driver-\u003en_klist is not\\nset, then it causes null-ptr-deref in __device_release_driver() while\\ndeleting device. Fix this by setting dev-\u003edriver to NULL in the error\\npath in phy_attach_direct().\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:12:35.902Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49021\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:12:35.902Z\", \"dateReserved\": \"2024-08-22T01:27:53.649Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T20:06:28.608Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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