CVE-2024-44949

{"id": "CVE-2024-44949", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-09-04T19:15:30.040", "references": [{"url": "https://git.kernel.org/stable/c/533de2f470baac40d3bf622fe631f15231a03c9f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/642a0b7453daff0295310774016fcb56d1f5bc7f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7ae04ba36b381bffe2471eff3a93edced843240f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "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\nparisc: fix a possible DMA corruption\n\nARCH_DMA_MINALIGN was defined as 16 - this is too small - it may be\npossible that two unrelated 16-byte allocations share a cache line. If\none of these allocations is written using DMA and the other is written\nusing cached write, the value that was written with DMA may be\ncorrupted.\n\nThis commit changes ARCH_DMA_MINALIGN to be 128 on PA20 and 32 on PA1.1 -\nthat's the largest possible cache line size.\n\nAs different parisc microarchitectures have different cache line size, we\ndefine arch_slab_minalign(), cache_line_size() and\ndma_get_cache_alignment() so that the kernel may tune slab cache\nparameters dynamically, based on the detected cache line size."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: parisc: se corrige una posible corrupci\u00f3n de DMA ARCH_DMA_MINALIGN se defini\u00f3 como 16 - esto es demasiado peque\u00f1o - puede ser posible que dos asignaciones de 16 bytes no relacionadas compartan una l\u00ednea de cach\u00e9. Si una de estas asignaciones se escribe usando DMA y la otra se escribe usando escritura en cach\u00e9, el valor que se escribi\u00f3 con DMA puede estar da\u00f1ado. Esta confirmaci\u00f3n cambia ARCH_DMA_MINALIGN a 128 en PA20 y 32 en PA1.1 - ese es el tama\u00f1o de l\u00ednea de cach\u00e9 m\u00e1s grande posible. Como las diferentes microarquitecturas de parisc tienen diferentes tama\u00f1os de l\u00ednea de cach\u00e9, definimos arch_slab_minalign(), cache_line_size() y dma_get_cache_alignment() para que el kernel pueda ajustar los par\u00e1metros de cach\u00e9 de losa din\u00e1micamente, seg\u00fan el tama\u00f1o de l\u00ednea de cach\u00e9 detectado."}], "lastModified": "2024-10-09T13:53:32.513", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "84C35A98-08C9-4674-8AC8-9CC0757B7699", "versionEndExcluding": "6.6.46"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D074AE50-4A5E-499C-A2FD-75FD60DEA560", "versionEndExcluding": "6.10.5", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8B3CE743-2126-47A3-8B7C-822B502CF119"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}