CVE-2021-47047

{"id": "CVE-2021-47047", "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": "2024-02-28T09:15:40.323", "references": [{"url": "https://git.kernel.org/stable/c/126bdb606fd2802454e6048caef1be3e25dd121e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5980a3b9c933408bc22b0e349b78c3ebd7cbf880", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bad5a23cf2b477fa78b85fd392736dae09a1e818", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c26c026eb496261dbc0adbf606cc81989cd2038c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/126bdb606fd2802454e6048caef1be3e25dd121e", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/5980a3b9c933408bc22b0e349b78c3ebd7cbf880", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/bad5a23cf2b477fa78b85fd392736dae09a1e818", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/c26c026eb496261dbc0adbf606cc81989cd2038c", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "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\nspi: spi-zynqmp-gqspi: return -ENOMEM if dma_map_single fails\n\nThe spi controller supports 44-bit address space on AXI in DMA mode,\nso set dma_addr_t width to 44-bit to avoid using a swiotlb mapping.\nIn addition, if dma_map_single fails, it should return immediately\ninstead of continuing doing the DMA operation which bases on invalid\naddress.\n\nThis fixes the following crash which occurs in reading a big block\nfrom flash:\n\n[ 123.633577] zynqmp-qspi ff0f0000.spi: swiotlb buffer is full (sz: 4194304 bytes), total 32768 (slots), used 0 (slots)\n[ 123.644230] zynqmp-qspi ff0f0000.spi: ERR:rxdma:memory not mapped\n[ 123.784625] Unable to handle kernel paging request at virtual address 00000000003fffc0\n[ 123.792536] Mem abort info:\n[ 123.795313] ESR = 0x96000145\n[ 123.798351] EC = 0x25: DABT (current EL), IL = 32 bits\n[ 123.803655] SET = 0, FnV = 0\n[ 123.806693] EA = 0, S1PTW = 0\n[ 123.809818] Data abort info:\n[ 123.812683] ISV = 0, ISS = 0x00000145\n[ 123.816503] CM = 1, WnR = 1\n[ 123.819455] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000805047000\n[ 123.825887] [00000000003fffc0] pgd=0000000803b45003, p4d=0000000803b45003, pud=0000000000000000\n[ 123.834586] Internal error: Oops: 96000145 [#1] PREEMPT SMP"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: spi: spi-zynqmp-gqspi: devuelve -ENOMEM si falla dma_map_single El controlador spi admite espacio de direcciones de 44 bits en AXI en modo DMA, por lo tanto, configure el ancho de dma_addr_t en 44 bits para Evite el uso de un mapeo swiotlb. Adem\u00e1s, si dma_map_single falla, deber\u00eda regresar inmediatamente en lugar de continuar realizando la operaci\u00f3n DMA que se basa en una direcci\u00f3n no v\u00e1lida. Esto corrige el siguiente fallo que se produce al leer un bloque grande desde flash: [123.633577] zynqmp-qspi ff0f0000.spi: el b\u00fafer swiotlb est\u00e1 lleno (tama\u00f1o: 4194304 bytes), total 32768 (ranuras), usado 0 (ranuras) [123.644230] zynqmp-qspi ff0f0000.spi: ERR:rxdma:memoria no asignada [123.784625] No se puede manejar la solicitud de paginaci\u00f3n del kernel en la direcci\u00f3n virtual 00000000003fffc0 [123.792536] Informaci\u00f3n de cancelaci\u00f3n de memoria: [123.795313] ESR = 0x96000145 [1 23.798351] EC = 0x25: DABT (actual EL), IL = 32 bits [ 123.803655] SET = 0, FnV = 0 [ 123.806693] EA = 0, S1PTW = 0 [ 123.809818] Informaci\u00f3n de cancelaci\u00f3n de datos: [ 123.812683] ISV = 0, ISS = 0x00000145 [ 123.816503] CM = 1 , WnR = 1 [ 123.819455] tabla de p\u00e1ginas de usuario: 4k p\u00e1ginas, VA de 48 bits, pgdp=0000000805047000 [ 123.825887] [00000000003fffc0] pgd=0000000803b45003, p4d=000000080 3b45003, pud=0000000000000000 [123.834586] Error interno: Ups: 96000145 [#1 ] ADVERTENCIA SMP"}], "lastModified": "2025-01-10T18:26:24.300", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4E433B72-3E3A-435E-9A66-80D28868BDF2", "versionEndExcluding": "5.10.37", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8CBB94EC-EC33-4464-99C5-03E5542715F0", "versionEndExcluding": "5.11.21", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D8C7052F-1B7B-4327-9C2B-84EBF3243838", "versionEndExcluding": "5.12.4", "versionStartIncluding": "5.12"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}