Vulnerability-Lookup

GHSA-6HQF-CG9R-X89W

Vulnerability from github – Published: 2026-09-11 21:31 – Updated: 2026-09-11 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

power: supply: qcom_battmgr: fix use-after-free

qcom_battmgr_pdr_notify() queues enable_work when the PMIC GLINK service comes up, and the worker recovers battmgr through container_of() to issue firmware requests. The PMIC GLINK client stays on the client list until its devres release action runs, so a PDR notification can keep queueing the work, and a pending or running worker can access battmgr after devres frees it.

Make enable_work device-managed with devm_work_autocancel(), registered before the PMIC GLINK client is allocated. The devres cleanup then releases the client first, so no further notification can queue the work, and cancels the work before battmgr is freed.

This issue was found by an in-house static analysis tool.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89467"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-11T20:19:27Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: qcom_battmgr: fix use-after-free\n\nqcom_battmgr_pdr_notify() queues enable_work when the PMIC GLINK service\ncomes up, and the worker recovers battmgr through container_of() to issue\nfirmware requests. The PMIC GLINK client stays on the client list until\nits devres release action runs, so a PDR notification can keep queueing\nthe work, and a pending or running worker can access battmgr after devres\nfrees it.\n\nMake enable_work device-managed with devm_work_autocancel(), registered\nbefore the PMIC GLINK client is allocated. The devres cleanup then\nreleases the client first, so no further notification can queue the work,\nand cancels the work before battmgr is freed.\n\nThis issue was found by an in-house static analysis tool.",
  "id": "GHSA-6hqf-cg9r-x89w",
  "modified": "2026-09-11T21:31:27Z",
  "published": "2026-09-11T21:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89467"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06618447029c6dddaa02f6e9528efe5dd49fc329"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49fbcd3da2958159370d25dafbf736e654a4d59b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e40befedfc8ed86f44e1f81df92d13c149c9f8d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-89467 (GCVE-0-2026-89467)

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

Title

power: supply: qcom_battmgr: fix use-after-free

Summary

In the Linux kernel, the following vulnerability has been resolved: power: supply: qcom_battmgr: fix use-after-free qcom_battmgr_pdr_notify() queues enable_work when the PMIC GLINK service comes up, and the worker recovers battmgr through container_of() to issue firmware requests. The PMIC GLINK client stays on the client list until its devres release action runs, so a PDR notification can keep queueing the work, and a pending or running worker can access battmgr after devres frees it. Make enable_work device-managed with devm_work_autocancel(), registered before the PMIC GLINK client is allocated. The devres cleanup then releases the client first, so no further notification can queue the work, and cancels the work before battmgr is freed. This issue was found by an in-house static analysis tool.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/06618447029c6ddda…
https://git.kernel.org/stable/c/49fbcd3da29581593…
https://git.kernel.org/stable/c/4e40befedfc8ed86f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 29e8142b5623b5949587bcc4f591c4e6595c4aca , < 06618447029c6dddaa02f6e9528efe5dd49fc329 (git) Affected: 29e8142b5623b5949587bcc4f591c4e6595c4aca , < 49fbcd3da2958159370d25dafbf736e654a4d59b (git) Affected: 29e8142b5623b5949587bcc4f591c4e6595c4aca , < 4e40befedfc8ed86f44e1f81df92d13c149c9f8d (git)
Linux	Linux	Affected: 6.3 Unaffected: 0 , < 6.3 (semver) Unaffected: 6.18.50 , ≤ 6.18.* (semver) Unaffected: 7.2.4 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "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": "06618447029c6dddaa02f6e9528efe5dd49fc329",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            },
            {
              "lessThan": "49fbcd3da2958159370d25dafbf736e654a4d59b",
              "status": "affected",
              "version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
              "versionType": "git"
            },
            {
              "lessThan": "4e40befedfc8ed86f44e1f81df92d13c149c9f8d",
              "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": "6.18.*",
              "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": "6.18.50",
                  "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: fix use-after-free\n\nqcom_battmgr_pdr_notify() queues enable_work when the PMIC GLINK service\ncomes up, and the worker recovers battmgr through container_of() to issue\nfirmware requests. The PMIC GLINK client stays on the client list until\nits devres release action runs, so a PDR notification can keep queueing\nthe work, and a pending or running worker can access battmgr after devres\nfrees it.\n\nMake enable_work device-managed with devm_work_autocancel(), registered\nbefore the PMIC GLINK client is allocated. The devres cleanup then\nreleases the client first, so no further notification can queue the work,\nand cancels the work before battmgr is freed.\n\nThis issue was found by an in-house static analysis tool."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-11T19:43:27.247Z",
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        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/4e40befedfc8ed86f44e1f81df92d13c149c9f8d"
        }
      ],
      "title": "power: supply: qcom_battmgr: fix use-after-free",
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    "datePublished": "2026-09-11T19:43:27.247Z",
    "dateReserved": "2026-09-11T19:38:34.709Z",
    "dateUpdated": "2026-09-11T19:43:27.247Z",
    "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.
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