CVE-2024-46750

{"id": "CVE-2024-46750", "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": "2024-09-18T08:15:03.947", "references": [{"url": "https://git.kernel.org/stable/c/04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/0790b89c7e911003b8c50ae50e3ac7645de1fae9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7253b4fed46471cc247c6cacefac890a8472c083", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/78c6e39fef5c428960aff742149bba302dd46f5a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/81c68e218ab883dfa368460a59b674084c0240da", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a4e772898f8bf2e7e1cf661a12c60a5612c4afab", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/df77a678c33871a6e4ac5b54a71662f1d702335b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e2355d513b89a2cb511b4ded0deb426cdb01acd0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-667"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: Add missing bridge lock to pci_bus_lock()\n\nOne of the true positives that the cfg_access_lock lockdep effort\nidentified is this sequence:\n\n WARNING: CPU: 14 PID: 1 at drivers/pci/pci.c:4886 pci_bridge_secondary_bus_reset+0x5d/0x70\n RIP: 0010:pci_bridge_secondary_bus_reset+0x5d/0x70\n Call Trace:\n <TASK>\n ? __warn+0x8c/0x190\n ? pci_bridge_secondary_bus_reset+0x5d/0x70\n ? report_bug+0x1f8/0x200\n ? handle_bug+0x3c/0x70\n ? exc_invalid_op+0x18/0x70\n ? asm_exc_invalid_op+0x1a/0x20\n ? pci_bridge_secondary_bus_reset+0x5d/0x70\n pci_reset_bus+0x1d8/0x270\n vmd_probe+0x778/0xa10\n pci_device_probe+0x95/0x120\n\nWhere pci_reset_bus() users are triggering unlocked secondary bus resets.\nIronically pci_bus_reset(), several calls down from pci_reset_bus(), uses\npci_bus_lock() before issuing the reset which locks everything *but* the\nbridge itself.\n\nFor the same motivation as adding:\n\n bridge = pci_upstream_bridge(dev);\n if (bridge)\n pci_dev_lock(bridge);\n\nto pci_reset_function() for the \"bus\" and \"cxl_bus\" reset cases, add\npci_dev_lock() for @bus->self to pci_bus_lock().\n\n[bhelgaas: squash in recursive locking deadlock fix from Keith Busch:\nhttps://lore.kernel.org/r/20240711193650.701834-1-kbusch@meta.com]"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: PCI: Agregar bloqueo de puente faltante a pci_bus_lock() Uno de los verdaderos positivos que identific\u00f3 el esfuerzo de cfg_access_lock lockdep es esta secuencia: ADVERTENCIA: CPU: 14 PID: 1 en drivers/pci/pci.c:4886 pci_bridge_secondary_bus_reset+0x5d/0x70 RIP: 0010:pci_bridge_secondary_bus_reset+0x5d/0x70 Rastreo de llamada: ? __warn+0x8c/0x190 ? pci_bridge_secondary_bus_reset+0x5d/0x70 ? report_bug+0x1f8/0x200 ? handle_bug+0x3c/0x70 ? exc_invalid_op+0x18/0x70 ? asm_exc_invalid_op+0x1a/0x20 ? pci_bridge_secondary_bus_reset+0x5d/0x70 pci_reset_bus+0x1d8/0x270 vmd_probe+0x778/0xa10 pci_device_probe+0x95/0x120 Donde los usuarios de pci_reset_bus() est\u00e1n activando reinicios de bus secundario desbloqueados. Ir\u00f3nicamente, pci_bus_reset(), varias llamadas despu\u00e9s de pci_reset_bus(), usa pci_bus_lock() antes de emitir el reinicio que bloquea todo *excepto* el puente mismo. Por la misma motivaci\u00f3n que agregar: bridge = pci_upstream_bridge(dev); if (bridge) pci_dev_lock(bridge); Para pci_reset_function() en los casos de reinicio de \"bus\" y \"cxl_bus\", agregue pci_dev_lock() para @bus-&gt;self a pci_bus_lock(). [bhelgaas: soluci\u00f3n de bloqueo recursivo de squash de Keith Busch: https://lore.kernel.org/r/20240711193650.701834-1-kbusch@meta.com]"}], "lastModified": "2024-09-30T13:27:45.787", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "29162FB8-5FA4-4DC4-86CE-5EB0CAEEF2F3", "versionEndExcluding": "4.19.322"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6265A402-9C3C-438F-BFC5-4194B2568B85", "versionEndExcluding": "5.4.284", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "864FC17C-501A-4823-A643-6F35D65D8A97", "versionEndExcluding": "5.10.226", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "043405A4-25FE-45D4-A7BB-2A0C3B7D17C1", "versionEndExcluding": "5.15.167", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6B1A95FC-7E7E-428B-BB59-F76640C652AE", "versionEndExcluding": "6.1.110", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E4529134-BAC4-4776-840B-304009E181A0", "versionEndExcluding": "6.6.51", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ACDEE48C-137A-4731-90D0-A675865E1BED", "versionEndExcluding": "6.10.10", "versionStartIncluding": "6.7"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}