GHSA-6789-C3XJ-P7CQ
Vulnerability from github – Published: 2025-10-04 18:31 – Updated: 2026-02-05 18:30In the Linux kernel, the following vulnerability has been resolved:
dax: Fix dax_mapping_release() use after free
A CONFIG_DEBUG_KOBJECT_RELEASE test of removing a device-dax region provider (like modprobe -r dax_hmem) yields:
kobject: 'mapping0' (ffff93eb460e8800): kobject_release, parent 0000000000000000 (delayed 2000) [..] DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 23 PID: 282 at kernel/locking/lockdep.c:232 __lock_acquire+0x9fc/0x2260 [..] RIP: 0010:__lock_acquire+0x9fc/0x2260 [..] Call Trace: [..] lock_acquire+0xd4/0x2c0 ? ida_free+0x62/0x130 _raw_spin_lock_irqsave+0x47/0x70 ? ida_free+0x62/0x130 ida_free+0x62/0x130 dax_mapping_release+0x1f/0x30 device_release+0x36/0x90 kobject_delayed_cleanup+0x46/0x150
Due to attempting ida_free() on an ida object that has already been freed. Devices typically only hold a reference on their parent while registered. If a child needs a parent object to complete its release it needs to hold a reference that it drops from its release callback. Arrange for a dax_mapping to pin its parent dev_dax instance until dax_mapping_release().
{
"affected": [],
"aliases": [
"CVE-2023-53613"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-04T16:15:58Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndax: Fix dax_mapping_release() use after free\n\nA CONFIG_DEBUG_KOBJECT_RELEASE test of removing a device-dax region\nprovider (like modprobe -r dax_hmem) yields:\n\n kobject: \u0027mapping0\u0027 (ffff93eb460e8800): kobject_release, parent 0000000000000000 (delayed 2000)\n [..]\n DEBUG_LOCKS_WARN_ON(1)\n WARNING: CPU: 23 PID: 282 at kernel/locking/lockdep.c:232 __lock_acquire+0x9fc/0x2260\n [..]\n RIP: 0010:__lock_acquire+0x9fc/0x2260\n [..]\n Call Trace:\n \u003cTASK\u003e\n [..]\n lock_acquire+0xd4/0x2c0\n ? ida_free+0x62/0x130\n _raw_spin_lock_irqsave+0x47/0x70\n ? ida_free+0x62/0x130\n ida_free+0x62/0x130\n dax_mapping_release+0x1f/0x30\n device_release+0x36/0x90\n kobject_delayed_cleanup+0x46/0x150\n\nDue to attempting ida_free() on an ida object that has already been\nfreed. Devices typically only hold a reference on their parent while\nregistered. If a child needs a parent object to complete its release it\nneeds to hold a reference that it drops from its release callback.\nArrange for a dax_mapping to pin its parent dev_dax instance until\ndax_mapping_release().",
"id": "GHSA-6789-c3xj-p7cq",
"modified": "2026-02-05T18:30:29Z",
"published": "2025-10-04T18:31:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53613"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/03859868ab82d57bfdd0cea1bf31f9319a5dded0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6d24b170a9db0456f577b1ab01226a2254c016a8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7310b84821f043dcf77d5e6aa0ad55dc1e10a11d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/94a85474f5e3e518bdbf8c9f51cb343d734a04f7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9c2f993b6ca903c030d58451b5bf9ea27d0d17fa"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f76db6781d76d8464ec2faa9752cc3fb2e4f6923"
}
],
"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"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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