GHSA-XQGW-9M49-8XXH
Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31In the Linux kernel, the following vulnerability has been resolved:
hwmon: Fix potential UAF in pec_store
Sashiko reports:
In pec_store(), a guard(mutex)(&hwdev->lock) is taken. If the chip write operation returns an error other than -EOPNOTSUPP, the code jumps to the put label, which calls put_device(hdev). If this drops the final reference, the device is freed. When the function then returns, the guard cleanup function runs and attempts to unlock the freed mutex.
Use scoped_guard() instead of guard() to avoid the problem.
{
"affected": [],
"aliases": [
"CVE-2026-98000"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-25T11:17:28Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: Fix potential UAF in pec_store\n\nSashiko reports:\n\nIn pec_store(), a guard(mutex)(\u0026hwdev-\u003elock) is taken. If the chip write\noperation returns an error other than -EOPNOTSUPP, the code jumps to the\nput label, which calls put_device(hdev). If this drops the final reference,\nthe device is freed. When the function then returns, the guard cleanup\nfunction runs and attempts to unlock the freed mutex.\n\nUse scoped_guard() instead of guard() to avoid the problem.",
"id": "GHSA-xqgw-9m49-8xxh",
"modified": "2026-09-25T12:31:32Z",
"published": "2026-09-25T12:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98000"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/01dd8b4fc2cf83c66565c0f382fb1841e9000a89"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/354ccc99b2dc8ba0cf6d4de34e520bcf6ecca5c2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8afab57bcdbc2186f325972e777880ac5a220f4f"
}
],
"schema_version": "1.4.0",
"severity": []
}
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