CVE-2022-49308

{"id": "CVE-2022-49308", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-02-26T07:01:07.607", "references": [{"url": "https://git.kernel.org/stable/c/033ec4e7e59ae5e1ef1e8c10bc6552926044ed1c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/35ff1ac55d301efb3f467cf5426faaeb3452994b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/368e68ad6da4317fc4170e8d92b51c13d1bfe7a7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5dcc2afe716d69f5112ce035cb14f007461ff189", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6e721f3ad0535b24f19a62420f4da95212cf069c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/abf3b222614f49f98e606fccdd269161c0d70204", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cb81ea998c461868d1168411a867d8ffee12f23f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d472c78cc82999d07bd09193a6718016ce9cd386", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nextcon: Modify extcon device to be created after driver data is set\n\nCurrently, someone can invoke the sysfs such as state_show()\nintermittently before dev_set_drvdata() is done.\nAnd it can be a cause of kernel Oops because of edev is Null at that time.\nSo modified the driver registration to after setting drviver data.\n\n- Oops's backtrace.\n\nBacktrace:\n[<c067865c>] (state_show) from [<c05222e8>] (dev_attr_show)\n[<c05222c0>] (dev_attr_show) from [<c02c66e0>] (sysfs_kf_seq_show)\n[<c02c6648>] (sysfs_kf_seq_show) from [<c02c496c>] (kernfs_seq_show)\n[<c02c4938>] (kernfs_seq_show) from [<c025e2a0>] (seq_read)\n[<c025e11c>] (seq_read) from [<c02c50a0>] (kernfs_fop_read)\n[<c02c5064>] (kernfs_fop_read) from [<c0231cac>] (__vfs_read)\n[<c0231c5c>] (__vfs_read) from [<c0231ee0>] (vfs_read)\n[<c0231e34>] (vfs_read) from [<c0232464>] (ksys_read)\n[<c02323f0>] (ksys_read) from [<c02324fc>] (sys_read)\n[<c02324e4>] (sys_read) from [<c00091d0>] (__sys_trace_return)"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: extcon: Modificar el dispositivo extcon para que se cree despu\u00e9s de que se configuren los datos del controlador. Actualmente, alguien puede invocar el sysfs como state_show() de forma intermitente antes de que se realice dev_set_drvdata(). Y puede ser una causa de errores del kernel debido a que edev es Null en ese momento. Por lo tanto, se modific\u00f3 el registro del controlador despu\u00e9s de configurar los datos del controlador. - Ups, el backtrace. Rastreo inverso: [] (mostrar estado) desde [] (mostrar atributo de desarrollo) [] (mostrar atributo de desarrollo) desde [] (mostrar secuencia de sysfs_kf_seq) [] (mostrar secuencia de sysfs_kf_seq) desde [] (mostrar secuencia de kernfs) [] (mostrar secuencia de kernfs) desde [] (leer secuencia) [] (leer secuencia) desde [] (leer secuencia de kernfs_fop) [] (kernfs_fop_read) desde [] (__vfs_read) [] (__vfs_read) desde [] (vfs_read) [] (vfs_read) desde [] (ksys_read) [] (ksys_read) desde [] (sys_read) [] (sys_read) desde [] (__sys_trace_return)"}], "lastModified": "2025-10-21T12:19:21.033", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "42074657-A7B6-4740-88B7-67B440018C1C", "versionEndExcluding": "4.14.283"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B8CFA0F4-2D75-41F4-9753-87944A08B53B", "versionEndExcluding": "4.19.247", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3EC49633-14DE-4EBD-BB80-76AE2E3EABB9", "versionEndExcluding": "5.4.198", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1B42AA01-44D8-4572-95E6-FF8E374CF9C5", "versionEndExcluding": "5.10.122", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FC042EE3-4864-4325-BE0B-4BCDBF11AA61", "versionEndExcluding": "5.15.47", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "53E7AA2E-2FB4-45CA-A22B-08B4EDBB51AD", "versionEndExcluding": "5.17.15", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA6D643C-6D6A-4821-8A8D-B5776B8F0103", "versionEndExcluding": "5.18.4", "versionStartIncluding": "5.18"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}