CVE-2021-47456

{"id": "CVE-2021-47456", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.5}]}, "published": "2024-05-22T07:15:10.627", "references": [{"url": "https://git.kernel.org/stable/c/0e5afdc2315b0737edcf55bede4ee1640d2d464d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1248582e47a9f7ce0ecd156c39fc61f8b6aa3699", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1c616528ba4aeb1125a06b407572ab7b56acae38", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/28f28e4bc3a5e0051faa963f10b778ab38c1db69", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/34914971bb3244db4ce2be44e9438a9b30c56250", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/447d44cd2f67a20b596ede3ca3cd67086dfd9ca9", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/949fe9b35570361bc6ee2652f89a0561b26eec98", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/adbda14730aacce41c0d3596415aa39ad63eafd9", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-416"}, {"lang": "en", "value": "CWE-467"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: peak_pci: peak_pci_remove(): fix UAF\n\nWhen remove the module peek_pci, referencing 'chan' again after\nreleasing 'dev' will cause UAF.\n\nFix this by releasing 'dev' later.\n\nThe following log reveals it:\n\n[ 35.961814 ] BUG: KASAN: use-after-free in peak_pci_remove+0x16f/0x270 [peak_pci]\n[ 35.963414 ] Read of size 8 at addr ffff888136998ee8 by task modprobe/5537\n[ 35.965513 ] Call Trace:\n[ 35.965718 ] dump_stack_lvl+0xa8/0xd1\n[ 35.966028 ] print_address_description+0x87/0x3b0\n[ 35.966420 ] kasan_report+0x172/0x1c0\n[ 35.966725 ] ? peak_pci_remove+0x16f/0x270 [peak_pci]\n[ 35.967137 ] ? trace_irq_enable_rcuidle+0x10/0x170\n[ 35.967529 ] ? peak_pci_remove+0x16f/0x270 [peak_pci]\n[ 35.967945 ] __asan_report_load8_noabort+0x14/0x20\n[ 35.968346 ] peak_pci_remove+0x16f/0x270 [peak_pci]\n[ 35.968752 ] pci_device_remove+0xa9/0x250"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: pico_pci: pico_pci_remove(): arreglar UAF Cuando se elimina el m\u00f3dulo peek_pci, hacer referencia a 'chan' nuevamente despu\u00e9s de liberar 'dev' causar\u00e1 UAF. Solucione este problema lanzando 'dev' m\u00e1s tarde. El siguiente registro lo revela: [35.961814] ERROR: KASAN: uso despu\u00e9s de liberar en pico_pci_remove+0x16f/0x270 [peak_pci] [35.963414] Lectura de tama\u00f1o 8 en addr ffff888136998ee8 por tarea modprobe/5537 [35.965513] Seguimiento de llamadas: [3 5.965718 ] dump_stack_lvl+0xa8/0xd1 [35.966028] print_address_description+0x87/0x3b0 [35.966420] kasan_report+0x172/0x1c0 [35.966725]? pico_pci_remove+0x16f/0x270 [pico_pci] [35.967137]? trace_irq_enable_rcuidle+0x10/0x170 [35.967529]? pico_pci_remove+0x16f/0x270 [pico_pci] [ 35.967945 ] __asan_report_load8_noabort+0x14/0x20 [ 35.968346 ] pico_pci_remove+0x16f/0x270 [pico_pci] [ 35.968752 ] ve+0xa9/0x250"}], "lastModified": "2024-07-03T01:37:57.757", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}