Vulnerability-Lookup

FKIE_CVE-2026-89466

Vulnerability from fkie_nvd - Published: 2026-09-11 20:19 - Updated: 2026-09-14 13:19

Severity

7.7 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: power: supply: qcom_battmgr: terminate the strings from firmware The qcom_battmgr_sc8280xp_strcpy() takes a Pascal-style string when the firmware sends one. Otherwise it copies all BATTMGR_STRING_LEN bytes and leaves the destination without a terminator. Those destinations are model_number, serial_number and oem_info, each BATTMGR_STRING_LEN and declared next to each other. They go out to user space as val->strval, which power_supply_format_property() prints with "%s", so a firmware string that fills the whole field makes that read run into the following members. Use strscpy() so the copy always terminates, the way the SM8350 path already does for the same field.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0e70a9b0d16acf7adebc4f386178a95da27c0027
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6cc6c28c9ab6e8ecf901397717a5b391b828cdaf
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ab1112df8f4ffa88cb024dd370c432ced80f77d8
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c06028db620854b11ad81b04b0a4e1ead930cb76
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ee053561e21ce1e1741dd64ca5ddcdb92e40edc1

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/qcom_battmgr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c06028db620854b11ad81b04b0a4e1ead930cb76",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            },
            {
              "lessThan": "0e70a9b0d16acf7adebc4f386178a95da27c0027",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            },
            {
              "lessThan": "ee053561e21ce1e1741dd64ca5ddcdb92e40edc1",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            },
            {
              "lessThan": "6cc6c28c9ab6e8ecf901397717a5b391b828cdaf",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            },
            {
              "lessThan": "ab1112df8f4ffa88cb024dd370c432ced80f77d8",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/qcom_battmgr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "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-\u003estrval, 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."
    }
  ],
  "id": "CVE-2026-89466",
  "lastModified": "2026-09-14T13:19:03.020",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.2,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-11T20:19:27.673",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "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"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-89466 (GCVE-0-2026-89466)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:43 – Updated: 2026-09-14 12:00

Title

power: supply: qcom_battmgr: terminate the strings from firmware

Summary

Severity

7.7 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/c06028db620854b11…
https://git.kernel.org/stable/c/0e70a9b0d16acf7ad…
https://git.kernel.org/stable/c/ee053561e21ce1e17…
https://git.kernel.org/stable/c/6cc6c28c9ab6e8ecf…
https://git.kernel.org/stable/c/ab1112df8f4ffa88c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 29e8142b5623b5949587bcc4f591c4e6595c4aca , < c06028db620854b11ad81b04b0a4e1ead930cb76 (git) Affected: 29e8142b5623b5949587bcc4f591c4e6595c4aca , < 0e70a9b0d16acf7adebc4f386178a95da27c0027 (git) Affected: 29e8142b5623b5949587bcc4f591c4e6595c4aca , < ee053561e21ce1e1741dd64ca5ddcdb92e40edc1 (git) Affected: 29e8142b5623b5949587bcc4f591c4e6595c4aca , < 6cc6c28c9ab6e8ecf901397717a5b391b828cdaf (git) Affected: 29e8142b5623b5949587bcc4f591c4e6595c4aca , < ab1112df8f4ffa88cb024dd370c432ced80f77d8 (git)
Linux	Linux	Affected: 6.3 Unaffected: 0 , < 6.3 (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.109 , ≤ 6.12.* (semver) Unaffected: 6.18.50 , ≤ 6.18.* (semver) Unaffected: 7.2.4 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/qcom_battmgr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c06028db620854b11ad81b04b0a4e1ead930cb76",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            },
            {
              "lessThan": "0e70a9b0d16acf7adebc4f386178a95da27c0027",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            },
            {
              "lessThan": "ee053561e21ce1e1741dd64ca5ddcdb92e40edc1",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            },
            {
              "lessThan": "6cc6c28c9ab6e8ecf901397717a5b391b828cdaf",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            },
            {
              "lessThan": "ab1112df8f4ffa88cb024dd370c432ced80f77d8",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/qcom_battmgr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.109",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.50",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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-\u003estrval, 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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The unterminated copies run in qcom_battmgr_sc8280xp_callback() on BATTMGR_BAT_INFO payloads received over on-SoC PMIC GLINK/rpmsg from the Qualcomm ADSP/SOCCP (PMIC_RTR_ADSP_APPS), not from a network protocol, Bluetooth, or a pluggable USB device.\nAC:L - Firmware fully controls the 128-byte model_number, serial_number, and oem_info fields; sending 128 non-NUL bytes (or a first byte that is not a Pascal length) always takes the memcpy() path that omits the terminator, with no race or attacker-uncontrollable layout.\nPR:N - pmic_glink_rpmsg_callback delivers ADSP/SOCCP payloads to qcom_battmgr_callback with no Linux credential or capability check, so compromised PMIC firmware can send BATTMGR_BAT_INFO and NOTIF_BAT_INFO without a host account.\nUI:N - Battery-info parsing and power_supply_changed() uevents run from the GLINK response/notification path and from automatic sysfs/uevent reads at boot; no victim must open a file, mount a filesystem, or take any other action.\nS:U - The over-read stays in host kernel memory around struct qcom_battmgr in the same OS security authority; this is ordinary kernel disclosure or denial of service, not a VM escape, IOMMU bypass, or sandbox breakout.\nC:H - Unterminated model_number, serial_number, and oem_info are printed with %s via world-readable power_supply sysfs and uevents; kernel vsnprintf scans until a NUL, an unbounded out-of-bounds read of adjacent kernel fields and pointers.\nI:N - qcom_battmgr_sc8280xp_strcpy() copies exactly BATTMGR_STRING_LEN bytes into same-sized destinations; the defect is a missing terminator that causes over-reads, not an out-of-bounds write, use-after-free, or control-flow hijack primitive.\nA:H - Unbounded %s scanning of those unterminated fields can walk past the kmalloc-backed qcom_battmgr object into unmapped pages, causing a kernel oops or panic, and firmware can retrigger the path through GLINK notifications."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T12:00:05.333Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c06028db620854b11ad81b04b0a4e1ead930cb76"
        },
        {
          "url": "https://git.kernel.org/stable/c/0e70a9b0d16acf7adebc4f386178a95da27c0027"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee053561e21ce1e1741dd64ca5ddcdb92e40edc1"
        },
        {
          "url": "https://git.kernel.org/stable/c/6cc6c28c9ab6e8ecf901397717a5b391b828cdaf"
        },
        {
          "url": "https://git.kernel.org/stable/c/ab1112df8f4ffa88cb024dd370c432ced80f77d8"
        }
      ],
      "title": "power: supply: qcom_battmgr: terminate the strings from firmware",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89466",
    "datePublished": "2026-09-11T19:43:26.621Z",
    "dateReserved": "2026-09-11T19:38:34.709Z",
    "dateUpdated": "2026-09-14T12:00:05.333Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.