CVE-2026-89466

{
  "id": "CVE-2026-89466",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-11T20:19:27.673",
  "lastModified": "2026-10-19T09:17:39.157",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: qcom_battmgr: terminate the strings from firmware\n\nThe qcom_battmgr_sc8280xp_strcpy() takes a Pascal-style string when the\nfirmware sends one. Otherwise it copies all BATTMGR_STRING_LEN bytes and\nleaves the destination without a terminator.\n\nThose destinations are model_number, serial_number and oem_info, each\nBATTMGR_STRING_LEN and declared next to each other. They go out to user\nspace as val->strval, which power_supply_format_property() prints with\n\"%s\", so a firmware string that fills the whole field makes that read run\ninto the following members.\n\nUse strscpy() so the copy always terminates, the way the SM8350 path\nalready does for the same field."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/power/supply/qcom_battmgr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "lessThan": "c06028db620854b11ad81b04b0a4e1ead930cb76",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "lessThan": "0e70a9b0d16acf7adebc4f386178a95da27c0027",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "lessThan": "ee053561e21ce1e1741dd64ca5ddcdb92e40edc1",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "lessThan": "6cc6c28c9ab6e8ecf901397717a5b391b828cdaf",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "lessThan": "ab1112df8f4ffa88cb024dd370c432ced80f77d8",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/power/supply/qcom_battmgr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.3",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.3",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.157",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.109",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.50",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.4",
              "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:N/A:H",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.2
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0e70a9b0d16acf7adebc4f386178a95da27c0027",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6cc6c28c9ab6e8ecf901397717a5b391b828cdaf",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ab1112df8f4ffa88cb024dd370c432ced80f77d8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c06028db620854b11ad81b04b0a4e1ead930cb76",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ee053561e21ce1e1741dd64ca5ddcdb92e40edc1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}