CVE-2024-36926

{"id": "CVE-2024-36926", "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}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.5}]}, "published": "2024-05-30T16:15:15.880", "references": [{"url": "https://git.kernel.org/stable/c/2bed905a72485a2b79a001bd7e66c750942d2155", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/49a940dbdc3107fecd5e6d3063dc07128177e058", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7fb5793c53f8c024e3eae9f0d44eb659aed833c4", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/802b13b79ab1fef66c6852fc745cf197dca0cb15", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries/iommu: LPAR panics during boot up with a frozen PE\n\nAt the time of LPAR boot up, partition firmware provides Open Firmware\nproperty ibm,dma-window for the PE. This property is provided on the PCI\nbus the PE is attached to.\n\nThere are execptions where the partition firmware might not provide this\nproperty for the PE at the time of LPAR boot up. One of the scenario is\nwhere the firmware has frozen the PE due to some error condition. This\nPE is frozen for 24 hours or unless the whole system is reinitialized.\n\nWithin this time frame, if the LPAR is booted, the frozen PE will be\npresented to the LPAR but ibm,dma-window property could be missing.\n\nToday, under these circumstances, the LPAR oopses with NULL pointer\ndereference, when configuring the PCI bus the PE is attached to.\n\n BUG: Kernel NULL pointer dereference on read at 0x000000c8\n Faulting instruction address: 0xc0000000001024c0\n Oops: Kernel access of bad area, sig: 7 [#1]\n LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries\n Modules linked in:\n Supported: Yes\n CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.4.0-150600.9-default #1\n Hardware name: IBM,9043-MRX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NM1060_023) hv:phyp pSeries\n NIP: c0000000001024c0 LR: c0000000001024b0 CTR: c000000000102450\n REGS: c0000000037db5c0 TRAP: 0300 Not tainted (6.4.0-150600.9-default)\n MSR: 8000000002009033 <SF,VEC,EE,ME,IR,DR,RI,LE> CR: 28000822 XER: 00000000\n CFAR: c00000000010254c DAR: 00000000000000c8 DSISR: 00080000 IRQMASK: 0\n ...\n NIP [c0000000001024c0] pci_dma_bus_setup_pSeriesLP+0x70/0x2a0\n LR [c0000000001024b0] pci_dma_bus_setup_pSeriesLP+0x60/0x2a0\n Call Trace:\n pci_dma_bus_setup_pSeriesLP+0x60/0x2a0 (unreliable)\n pcibios_setup_bus_self+0x1c0/0x370\n __of_scan_bus+0x2f8/0x330\n pcibios_scan_phb+0x280/0x3d0\n pcibios_init+0x88/0x12c\n do_one_initcall+0x60/0x320\n kernel_init_freeable+0x344/0x3e4\n kernel_init+0x34/0x1d0\n ret_from_kernel_user_thread+0x14/0x1c"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/pseries/iommu: LPAR entra en p\u00e1nico durante el arranque con un PE congelado En el momento del arranque de LPAR, el firmware de la partici\u00f3n proporciona la propiedad Open Firmware ibm,dma-window para el PE. Esta propiedad se proporciona en el bus PCI al que est\u00e1 conectado el PE. Hay excepciones en las que es posible que el firmware de la partici\u00f3n no proporcione esta propiedad para el PE en el momento del arranque de LPAR. Uno de los escenarios es donde el firmware ha congelado el PE debido a alguna condici\u00f3n de error. Este PE se congela durante 24 horas o a menos que se reinicialice todo el sistema. Dentro de este per\u00edodo de tiempo, si se inicia la LPAR, el PE congelado se presentar\u00e1 a la LPAR, pero es posible que falte la propiedad ibm,dma-window. Hoy en d\u00eda, bajo estas circunstancias, la LPAR falla con la desreferencia del puntero NULL al configurar el bus PCI al que est\u00e1 conectado el PE. ERROR: Desreferencia del puntero NULL del kernel al leer en 0x000000c8 Direcci\u00f3n de instrucci\u00f3n err\u00f3nea: 0xc0000000001024c0 Ups: Acceso al kernel del \u00e1rea defectuosa, firma: 7 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 M\u00f3dulos NUMA pSeries vinculados en: Compatible: S\u00ed CPU: 0 PID: 1 Comunicaciones: swapper/0 No contaminado 6.4.0-150600.9-default #1 Nombre de hardware: IBM,9043-MRX POWER10 (sin procesar) 0x800200 0xf000006 de:IBM,FW1060.00 (NM1060_023) hv:phyp pSeries NIP: c0000000001024c0 LR: c0000000001024b0 CTR: c000000000102450 REGS: c0000000037db5c0 TRAP: 0300 No contaminado (6.4.0-150600.9-predeterminado) MSR: 800000000200 9033 CR: 28000822 XER : 00000000 CFAR: c00000000010254c DAR: 00000000000000c8 DSISR: 00080000 IRQMASK: 0 ... NIP [c0000000001024c0] pci_dma_bus_setup_pSeriesLP+0x70/0x2a0 LR [c0000 000001024b0] pci_dma_bus_setup_pSeriesLP+0x60/0x2a0 Seguimiento de llamadas: pci_dma_bus_setup_pSeriesLP+0x60/0x2a0 (no confiable) pcibios_setup_bus_self+0x1c0/ 0x370 __of_scan_bus+0x2f8/0x330 pcibios_scan_phb+0x280/0x3d0 pcibios_init+0x88/0x12c do_one_initcall+0x60/0x320 kernel_init_freeable+0x344/0x3e4 kernel_init+0x34/0x1d0 _usuario_thread+0x14/0x1c"}], "lastModified": "2024-07-03T02:03:51.367", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "54C26F9A-8376-491B-B07E-65C07B72B8D9", "versionEndExcluding": "6.1.91", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CDDB1F69-36AC-41C1-9192-E7CCEF5FFC00", "versionEndExcluding": "6.6.31", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6A6B920C-8D8F-4130-86B4-AD334F4CF2E3", "versionEndExcluding": "6.8.10", "versionStartIncluding": "6.7"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}