CVE-2022-49021

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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": "e13934563db047043ccead26412f552375cea90c", "lessThan": "8aaafe0f71314f46a066382a047ba8bb3840d273", "status": "affected", "versionType": "git"}, {"version": "e13934563db047043ccead26412f552375cea90c", "lessThan": "51d7f6b20fae8bae64ad1136f1e30d1fd5ba78f7", "status": "affected", "versionType": "git"}, {"version": "e13934563db047043ccead26412f552375cea90c", "lessThan": "0744c7be4de564db03e24527b2e096b7e0e20972", "status": "affected", "versionType": "git"}, {"version": "e13934563db047043ccead26412f552375cea90c", "lessThan": "3e21f85d87c836462bb52ef2078ea561260935c1", "status": "affected", "versionType": "git"}, {"version": "e13934563db047043ccead26412f552375cea90c", 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[{"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()."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.335", "versionStartIncluding": "2.6.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.301", "versionStartIncluding": "2.6.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.268", "versionStartIncluding": "2.6.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.226", "versionStartIncluding": "2.6.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.158", "versionStartIncluding": "2.6.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.82", "versionStartIncluding": "2.6.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.0.12", "versionStartIncluding": "2.6.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1", "versionStartIncluding": "2.6.14"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T18:51:40.589Z"}}}, "cveMetadata": {"cveId": "CVE-2022-49021", "state": "PUBLISHED", "dateUpdated": "2026-05-11T18:51:40.589Z", "dateReserved": "2024-08-22T01:27:53.649Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-10-21T20:06:28.608Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"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", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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 <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()."}, {"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-&gt;drv no es NULL klist_remove() &lt;- knode_driver a\u00fan no se agreg\u00f3, causa null-ptr-deref En phy_attach_direct(), despu\u00e9s de configurar 'dev-&gt;driver', probe() fallo, device_bind_driver() no se llama, por lo que knode_driver-&gt;n_klist no est\u00e1 configurado, luego causa null-ptr-deref en __device_release_driver() mientras se elimina el dispositivo. Solucione esto configurando dev-&gt;driver en NULL en la ruta de error en phy_attach_direct()."}], "id": "CVE-2022-49021", "lastModified": "2026-06-17T05:16:52.147", "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-2022-49021", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-22T13:12:34.199961Z", "version": "2.0.3"}}]}, "published": "2024-10-21T20:15:13.163", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net: phy: fix null-ptr-deref while probe() failed", "id": "2320669", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320669"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: phy: fix null-ptr-deref while probe() failed\nI got a null-ptr-deref report as following when doing fault injection test:\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>\nklist_remove+0xf1/0x1c0\ndevice_release_driver_internal+0x23e/0x2d0\nbus_remove_device+0x1bd/0x240\ndevice_del+0x357/0x770\nphy_device_remove+0x11/0x30\nmdiobus_unregister+0xa5/0x140\nrelease_nodes+0x6a/0xa0\ndevres_release_all+0xf8/0x150\ndevice_unbind_cleanup+0x19/0xd0\n//probe path:\nphy_device_register()\ndevice_add()\nphy_connect\nphy_attach_direct() //set device driver\nprobe() //it's failed, driver is not bound\ndevice_bind_driver() // probe failed, it's not called\n//remove path:\nphy_device_remove()\ndevice_del()\ndevice_release_driver_internal()\n__device_release_driver() //dev->drv is not NULL\nklist_remove() <- knode_driver is not added yet, cause null-ptr-deref\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()."], "name": "CVE-2022-49021", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49021\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49021\nhttps://lore.kernel.org/linux-cve-announce/2024102154-CVE-2022-49021-9979@gregkh/T"], "threat_severity": "Moderate"}

{}