ghsa-9w7w-3xjc-3wgw
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
ubi: Fix possible null-ptr-deref in ubi_free_volume()
It willl cause null-ptr-deref in the following case:
uif_init() ubi_add_volume() cdev_add() -> if it fails, call kill_volumes() device_register()
kill_volumes() -> if ubi_add_volume() fails call this function ubi_free_volume() cdev_del() device_unregister() -> trying to delete a not added device, it causes null-ptr-deref
So in ubi_free_volume(), it delete devices whether they are added or not, it will causes null-ptr-deref.
Handle the error case whlie calling ubi_add_volume() to fix this problem. If add volume fails, set the corresponding vol to null, so it can not be accessed in kill_volumes() and release the resource in ubi_add_volume() error path.
{
"affected": [],
"aliases": [
"CVE-2023-54087"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-24T13:16:10Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nubi: Fix possible null-ptr-deref in ubi_free_volume()\n\nIt willl cause null-ptr-deref in the following case:\n\nuif_init()\n ubi_add_volume()\n cdev_add() -\u003e if it fails, call kill_volumes()\n device_register()\n\nkill_volumes() -\u003e if ubi_add_volume() fails call this function\n ubi_free_volume()\n cdev_del()\n device_unregister() -\u003e trying to delete a not added device,\n\t\t\t it causes null-ptr-deref\n\nSo in ubi_free_volume(), it delete devices whether they are added\nor not, it will causes null-ptr-deref.\n\nHandle the error case whlie calling ubi_add_volume() to fix this\nproblem. If add volume fails, set the corresponding vol to null,\nso it can not be accessed in kill_volumes() and release the\nresource in ubi_add_volume() error path.",
"id": "GHSA-9w7w-3xjc-3wgw",
"modified": "2025-12-24T15:30:37Z",
"published": "2025-12-24T15:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54087"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/234c53e57424992e657e6f4acc00d3df0983176f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2ea7195b195009ecf0046e55361f393ba96d02db"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/45b2c5ca4d2edae70f19fdb086bd927840c4c309"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5558bcf1c58720ca6e9d6198d921cb3aa337f038"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5ec4c8aca5a221756a9007deadfea92795319fee"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9eccdb0760cbcb4427b5303a83a3007de998af51"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c15859bfd326c10230f09cb48a17f8a35f190342"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fcbc795abe7897da4b5d2a6ab5010e36774b00c2"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
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