CVE-2024-38543

{"id": "CVE-2024-38543", "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": "2024-06-19T14:15:14.587", "references": [{"url": "https://git.kernel.org/stable/c/1a21fdeea502658e315bd939409b755974f4fb64", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3b20d18f475bd17309db640dbe7d7c7ebb5bc2bc", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/65e528a69cb3ed4a286c45b4afba57461c8b5b33", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c2af060d1c18beaec56351cf9c9bcbbc5af341a3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ce47e8ead9a72834cc68431d53f8092ce69bebb7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlib/test_hmm.c: handle src_pfns and dst_pfns allocation failure\n\nThe kcalloc() in dmirror_device_evict_chunk() will return null if the\nphysical memory has run out. As a result, if src_pfns or dst_pfns is\ndereferenced, the null pointer dereference bug will happen.\n\nMoreover, the device is going away. If the kcalloc() fails, the pages\nmapping a chunk could not be evicted. So add a __GFP_NOFAIL flag in\nkcalloc().\n\nFinally, as there is no need to have physically contiguous memory, Switch\nkcalloc() to kvcalloc() in order to avoid failing allocations."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: lib/test_hmm.c: maneja el error de asignaci\u00f3n de src_pfns y dst_pfns El kcalloc() en dmirror_device_evict_chunk() devolver\u00e1 nulo si la memoria f\u00edsica se ha agotado. Como resultado, si se desreferencia src_pfns o dst_pfns, se producir\u00e1 el error de desreferencia del puntero nulo. Adem\u00e1s, el dispositivo va a desaparecer. Si kcalloc() falla, las p\u00e1ginas que asignan un fragmento no podr\u00e1n ser desalojadas. Entonces agregue una bandera __GFP_NOFAIL en kcalloc(). Finalmente, como no es necesario tener memoria f\u00edsicamente contigua, cambie kcalloc() a kvcalloc() para evitar asignaciones fallidas."}], "lastModified": "2024-08-29T02:24:30.617", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0E45DB65-3DD8-4BD3-981F-8388D2510657", "versionEndExcluding": "6.1.93", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FCE796DF-3B50-4DC6-BAE5-95271068FC9E", "versionEndExcluding": "6.6.33", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "80550309-67AB-4FD1-AC07-3DED5C4F01B2", "versionEndExcluding": "6.8.12", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E07124C1-19E8-4D21-828D-9932A01D3011", "versionEndExcluding": "6.9.3", "versionStartIncluding": "6.9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}