{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/power/em_netlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ab09b9a1e3b02ff62c5aebe3b12b0cb4cb4ea8ab",
              "status": "affected",
              "version": "380ff27af25e49e2cb2ff8fd0ecd7c95be2976ee",
              "versionType": "git"
            },
            {
              "lessThan": "9badc2a84e688be1275bb740942d5f6f51746908",
              "status": "affected",
              "version": "380ff27af25e49e2cb2ff8fd0ecd7c95be2976ee",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/power/em_netlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.12",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPM: EM: Fix NULL pointer dereference when perf domain ID is not found\n\ndev_energymodel_nl_get_perf_domains_doit() calls\nem_perf_domain_get_by_id() but does not check the return value before\npassing it to __em_nl_get_pd_size(). When a caller supplies a\nnon-existent perf domain ID, em_perf_domain_get_by_id() returns NULL,\nand __em_nl_get_pd_size() immediately dereferences pd-\u003ecpus\n(struct offset 0x30), causing a NULL pointer dereference.\n\nThe sister handler dev_energymodel_nl_get_perf_table_doit() already\nhandles this correctly via __em_nl_get_pd_table_id(), which returns\nNULL and causes the caller to return -EINVAL. Add the same NULL check\nin the get-perf-domains do handler.\n\n[ rjw: Subject and changelog edits ]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-01T14:14:38.820Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ab09b9a1e3b02ff62c5aebe3b12b0cb4cb4ea8ab"
        },
        {
          "url": "https://git.kernel.org/stable/c/9badc2a84e688be1275bb740942d5f6f51746908"
        }
      ],
      "title": "PM: EM: Fix NULL pointer dereference when perf domain ID is not found",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31744",
    "datePublished": "2026-05-01T14:14:38.820Z",
    "dateReserved": "2026-03-09T15:48:24.138Z",
    "dateUpdated": "2026-05-01T14:14:38.820Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-31744",
      "date": "2026-05-05",
      "epss": "0.00018",
      "percentile": "0.04977"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-31744\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-01T15:16:37.157\",\"lastModified\":\"2026-05-01T15:24:14.893\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nPM: EM: Fix NULL pointer dereference when perf domain ID is not found\\n\\ndev_energymodel_nl_get_perf_domains_doit() calls\\nem_perf_domain_get_by_id() but does not check the return value before\\npassing it to __em_nl_get_pd_size(). When a caller supplies a\\nnon-existent perf domain ID, em_perf_domain_get_by_id() returns NULL,\\nand __em_nl_get_pd_size() immediately dereferences pd-\u003ecpus\\n(struct offset 0x30), causing a NULL pointer dereference.\\n\\nThe sister handler dev_energymodel_nl_get_perf_table_doit() already\\nhandles this correctly via __em_nl_get_pd_table_id(), which returns\\nNULL and causes the caller to return -EINVAL. Add the same NULL check\\nin the get-perf-domains do handler.\\n\\n[ rjw: Subject and changelog edits ]\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/9badc2a84e688be1275bb740942d5f6f51746908\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ab09b9a1e3b02ff62c5aebe3b12b0cb4cb4ea8ab\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}