{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/core/region.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "12316b9f7c18138ae656050cfd716728e27b7e2f",
              "status": "affected",
              "version": "384e624bb211b406db40edc900bb51af8bb267d0",
              "versionType": "git"
            },
            {
              "lessThan": "a90accb358ae33ea982a35595573f7a045993f8b",
              "status": "affected",
              "version": "384e624bb211b406db40edc900bb51af8bb267d0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/core/region.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.8",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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  \u003cTASK\u003e\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"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:47:57.989Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/12316b9f7c18138ae656050cfd716728e27b7e2f"
        },
        {
          "url": "https://git.kernel.org/stable/c/a90accb358ae33ea982a35595573f7a045993f8b"
        }
      ],
      "title": "cxl/region: Fix region HPA ordering validation",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49894",
    "datePublished": "2025-05-01T14:10:37.109Z",
    "dateReserved": "2025-05-01T14:05:17.243Z",
    "dateUpdated": "2025-05-04T08:47:57.989Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49894\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:14.417\",\"lastModified\":\"2025-05-02T13:52:51.693\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"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  \u003cTASK\u003e\\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\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/12316b9f7c18138ae656050cfd716728e27b7e2f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a90accb358ae33ea982a35595573f7a045993f8b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}