CVE-2024-38574

{"id": "CVE-2024-38574", "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": "2024-06-19T14:15:17.520", "references": [{"url": "https://git.kernel.org/stable/c/1fd91360a75833b7110af9834ae26c977e1273e0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9bf48fa19a4b1d186e08b20bf7e5de26a15644fb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ef80b59acfa4dee4b5eaccb15572b69248831104", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1fd91360a75833b7110af9834ae26c977e1273e0", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/9bf48fa19a4b1d186e08b20bf7e5de26a15644fb", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/ef80b59acfa4dee4b5eaccb15572b69248831104", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "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\nlibbpf: Prevent null-pointer dereference when prog to load has no BTF\n\nIn bpf_objec_load_prog(), there's no guarantee that obj->btf is non-NULL\nwhen passing it to btf__fd(), and this function does not perform any\ncheck before dereferencing its argument (as bpf_object__btf_fd() used to\ndo). As a consequence, we get segmentation fault errors in bpftool (for\nexample) when trying to load programs that come without BTF information.\n\nv2: Keep btf__fd() in the fix instead of reverting to bpf_object__btf_fd()."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: libbpf: evita la desreferencia del puntero nulo cuando el programa a cargar no tiene BTF. En bpf_objec_load_prog(), no hay garant\u00eda de que obj->btf no sea NULL al pasarlo a btf__fd() , y esta funci\u00f3n no realiza ninguna verificaci\u00f3n antes de eliminar la referencia a su argumento (como sol\u00eda hacer bpf_object__btf_fd()). Como consecuencia, obtenemos errores de segmentaci\u00f3n en bpftool (por ejemplo) cuando intentamos cargar programas que vienen sin informaci\u00f3n BTF. v2: Mantenga btf__fd() en la soluci\u00f3n en lugar de volver a bpf_object__btf_fd()."}], "lastModified": "2025-01-31T15:18:10.893", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "32F3B5DB-BFED-4D0E-86BB-2B6ECB1CEFB9", "versionEndExcluding": "6.8.12", "versionStartIncluding": "6.8"}, {"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"}