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While exit_dell_smbios_wmi()\nunregisters it unconditionally, this leads to the following oops:\n\n[ 175.722921] ------------[ cut here ]------------\n[ 175.722925] Unexpected driver unregister!\n[ 175.722939] WARNING: CPU: 1 PID: 3630 at drivers/base/driver.c:194 driver_unregister+0x38/0x40\n...\n[ 175.723089] Call Trace:\n[ 175.723094] cleanup_module+0x5/0xedd [dell_smbios]\n...\n[ 175.723148] ---[ end trace 064c34e1ad49509d ]---\n\nMake the unregister happen on the same condition the register happens\nto fix this."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: plataforma/x86: dell-smbios-wmi: se corrigi\u00f3 Ups en rmmod dell_smbios init_dell_smbios_wmi() solo registra dell_smbios_wmi_driver en sistemas donde se admite la interfaz Dell WMI. Si bien exit_dell_smbios_wmi() lo cancela del registro incondicionalmente, esto genera lo siguiente: [175.722921] ------------[ cortar aqu\u00ed ]------------ [ 175.722925] Inesperado \u00a1Dar de baja al conductor! [175.722939] ADVERTENCIA: CPU: 1 PID: 3630 en drivers/base/driver.c:194 driver_unregister+0x38/0x40... [175.723089] Seguimiento de llamadas: [175.723094] cleanup_module+0x5/0xedd [dell_smbios]... [ 175.723148] ---[ end trace 064c34e1ad49509d ]--- Haga que la cancelaci\u00f3n del registro se realice en las mismas condiciones que el registro para solucionar este problema."}], "id": "CVE-2021-47073", "lastModified": "2025-01-09T15:24:54.467", "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"}]}, "published": "2024-03-01T22:15:47.060", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:4352", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.8.1.rt7.349.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-07-08T00:00:00Z"}, {"advisory": "RHSA-2024:4211", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.8.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-07-02T00:00:00Z"}], "bugzilla": {"description": "kernel: platform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios", "id": "2267518", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2267518"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L", "status": "verified"}, "cwe": "CWE-99", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nplatform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios\ninit_dell_smbios_wmi() only registers the dell_smbios_wmi_driver on systems\nwhere the Dell WMI interface is supported. While exit_dell_smbios_wmi()\nunregisters it unconditionally, this leads to the following oops:\n[ 175.722921] ------------[ cut here ]------------\n[ 175.722925] Unexpected driver unregister!\n[ 175.722939] WARNING: CPU: 1 PID: 3630 at drivers/base/driver.c:194 driver_unregister+0x38/0x40\n...\n[ 175.723089] Call Trace:\n[ 175.723094] cleanup_module+0x5/0xedd [dell_smbios]\n...\n[ 175.723148] ---[ end trace 064c34e1ad49509d ]---\nMake the unregister happen on the same condition the register happens\nto fix this."], "name": "CVE-2021-47073", "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:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-03-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47073\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47073\nhttps://lore.kernel.org/linux-cve-announce/2024030142-CVE-2021-47073-704a@gregkh/T/#u"], "threat_severity": "Low"}

{}