CVE-2022-49894

{"id": "CVE-2022-49894", "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": "2025-05-01T15:16:14.417", "references": [{"url": "https://git.kernel.org/stable/c/12316b9f7c18138ae656050cfd716728e27b7e2f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a90accb358ae33ea982a35595573f7a045993f8b", "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\ncxl/region: Fix region HPA ordering validation\n\nSome regions may not have any address space allocated. Skip them when\nvalidating HPA order otherwise a crash like the following may result:\n\n devm_cxl_add_region: cxl_acpi cxl_acpi.0: decoder3.4: created region9\n BUG: kernel NULL pointer dereference, address: 0000000000000000\n [..]\n RIP: 0010:store_targetN+0x655/0x1740 [cxl_core]\n [..]\n Call Trace:\n <TASK>\n kernfs_fop_write_iter+0x144/0x200\n vfs_write+0x24a/0x4d0\n ksys_write+0x69/0xf0\n do_syscall_64+0x3a/0x90\n\nstore_targetN+0x655/0x1740:\nalloc_region_ref at drivers/cxl/core/region.c:676\n(inlined by) cxl_port_attach_region at drivers/cxl/core/region.c:850\n(inlined by) cxl_region_attach at drivers/cxl/core/region.c:1290\n(inlined by) attach_target at drivers/cxl/core/region.c:1410\n(inlined by) store_targetN at drivers/cxl/core/region.c:1453"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cxl/region: Corregir la validaci\u00f3n del ordenamiento HPA de la regi\u00f3n. Algunas regiones pueden no tener ning\u00fan espacio de direcciones asignado. Om\u00edtalos al validar el orden de HPA; de lo contrario, puede producirse un fallo como el siguiente: devm_cxl_add_region: cxl_acpi cxl_acpi.0: decoder3.4: created region9 BUG: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000000 [..] RIP: 0010:store_targetN+0x655/0x1740 [cxl_core] [..] Seguimiento de llamadas: kernfs_fop_write_iter+0x144/0x200 vfs_write+0x24a/0x4d0 ksys_write+0x69/0xf0 do_syscall_64+0x3a/0x90 store_targetN+0x655/0x1740: alloc_region_ref at drivers/cxl/core/region.c:676 (integrado por) cxl_port_attach_region en drivers/cxl/core/region.c:850 (integrado por) cxl_region_attach en drivers/cxl/core/region.c:1290 (integrado por) attached_target en drivers/cxl/core/region.c:1410 (integrado por) store_targetN en drivers/cxl/core/region.c:1453"}], "lastModified": "2025-05-07T13:19:31.730", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2AE8E086-9C21-4A47-A505-C5DBF09AAA5A", "versionEndExcluding": "6.0.8", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}