GHSA-6HQF-CG9R-X89W
Vulnerability from github – Published: 2026-09-11 21:31 – Updated: 2026-10-21 15:41In 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.
{
"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": "2026-10-21T15:41:06Z",
"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/35964ed01e10b61a30066b0c568aa0e0e8fb6432"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/49fbcd3da2958159370d25dafbf736e654a4d59b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4e40befedfc8ed86f44e1f81df92d13c149c9f8d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/77fefca305db44b0edd3fcdb52d781771c1ce366"
}
],
"schema_version": "1.4.0",
"severity": []
}
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