CVE-2026-89992

Full vulnerability record from the local CVENow database.
Description

In the Linux kernel, the following vulnerability has been resolved: cpuidle: dt_idle_genpd: kfree() the original name allocation dt_idle_pd_alloc() kasprintf()s the full node path, then points pd->name at kbasename() of that string. dt_idle_pd_free() kfree()s pd->name, which is no longer the start of the allocation. Copy the basename instead.
Severity
HIGH
CVSS score
8.4 (v3.1)
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-09-16 11:17:10.350000
Last modified
2026-10-19 09:18:46.363000
View original CVE JSON
{
  "id": "CVE-2026-89992",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-16T11:17:10.350",
  "lastModified": "2026-10-19T09:18:46.363",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpuidle: dt_idle_genpd: kfree() the original name allocation\n\ndt_idle_pd_alloc() kasprintf()s the full node path, then points\npd->name at kbasename() of that string. dt_idle_pd_free() kfree()s\npd->name, which is no longer the start of the allocation.\n\nCopy the basename instead."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/cpuidle/dt_idle_genpd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "9d976d6721dfb525b81ce981e1363c70c0975aab",
              "lessThan": "1312ae33b91430ec99e69cd3d47f0e50a4ebf54b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "9d976d6721dfb525b81ce981e1363c70c0975aab",
              "lessThan": "a38caa9ed0d5c61c17d88393b14b292199289c1f",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "9d976d6721dfb525b81ce981e1363c70c0975aab",
              "lessThan": "09d002c8fb0261d35ce9d8a705de5db034ee90b8",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "9d976d6721dfb525b81ce981e1363c70c0975aab",
              "lessThan": "b519dfce1998c323e54a56f911cf708d9ba0e076",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "9d976d6721dfb525b81ce981e1363c70c0975aab",
              "lessThan": "3394c7ba23336bdb7ece29127130fd01731d42d8",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "9d976d6721dfb525b81ce981e1363c70c0975aab",
              "lessThan": "2b0ac85512b7f67479127b2713254490662eb13d",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/cpuidle/dt_idle_genpd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "5.18",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "5.18",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.188",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.157",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.110",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.51",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.5",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.9
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/09d002c8fb0261d35ce9d8a705de5db034ee90b8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1312ae33b91430ec99e69cd3d47f0e50a4ebf54b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2b0ac85512b7f67479127b2713254490662eb13d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3394c7ba23336bdb7ece29127130fd01731d42d8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a38caa9ed0d5c61c17d88393b14b292199289c1f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b519dfce1998c323e54a56f911cf708d9ba0e076",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}