GHSA-PJX4-HM8G-PCG2
Vulnerability from github – Published: 2025-09-18 18:30 – Updated: 2025-12-12 18:30In the Linux kernel, the following vulnerability has been resolved:
drm/panfrost: Fix GEM handle creation ref-counting
panfrost_gem_create_with_handle() previously returned a BO but with the only reference being from the handle, which user space could in theory guess and release, causing a use-after-free. Additionally if the call to panfrost_gem_mapping_get() in panfrost_ioctl_create_bo() failed then a(nother) reference on the BO was dropped.
The _create_with_handle() is a problematic pattern, so ditch it and instead create the handle in panfrost_ioctl_create_bo(). If the call to panfrost_gem_mapping_get() fails then this means that user space has indeed gone behind our back and freed the handle. In which case just return an error code.
{
"affected": [],
"aliases": [
"CVE-2022-50417"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-18T16:15:45Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panfrost: Fix GEM handle creation ref-counting\n\npanfrost_gem_create_with_handle() previously returned a BO but with the\nonly reference being from the handle, which user space could in theory\nguess and release, causing a use-after-free. Additionally if the call to\npanfrost_gem_mapping_get() in panfrost_ioctl_create_bo() failed then\na(nother) reference on the BO was dropped.\n\nThe _create_with_handle() is a problematic pattern, so ditch it and\ninstead create the handle in panfrost_ioctl_create_bo(). If the call to\npanfrost_gem_mapping_get() fails then this means that user space has\nindeed gone behind our back and freed the handle. In which case just\nreturn an error code.",
"id": "GHSA-pjx4-hm8g-pcg2",
"modified": "2025-12-12T18:30:28Z",
"published": "2025-09-18T18:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50417"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0b70f6ea4d4f2b4d4b291d86ab76b4d07394932c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3f9feffa8a5ab08b4e298a27b1aa7204a7d42ca2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4217c6ac817451d5116687f3cc6286220dc43d49"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4f1105ee72d8c7c35d90e3491b31b2d9d6b7e33a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ba3d2c2380e7129b525a787489c0b7e819a3b898"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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