ghsa-x97p-h9j9-9889
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
drivers: usb: host: Fix deadlock in oxu_bus_suspend()
There is a deadlock in oxu_bus_suspend(), which is shown below:
(Thread 1) | (Thread 2) | timer_action() oxu_bus_suspend() | mod_timer() spin_lock_irq() //(1) | (wait a time) ... | oxu_watchdog() del_timer_sync() | spin_lock_irq() //(2) (wait timer to stop) | ...
We hold oxu->lock in position (1) of thread 1, and use del_timer_sync() to wait timer to stop, but timer handler also need oxu->lock in position (2) of thread 2. As a result, oxu_bus_suspend() will block forever.
This patch extracts del_timer_sync() from the protection of spin_lock_irq(), which could let timer handler to obtain the needed lock.
{
"affected": [],
"aliases": [
"CVE-2022-49313"
],
"database_specific": {
"cwe_ids": [
"CWE-667"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-26T07:01:08Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: usb: host: Fix deadlock in oxu_bus_suspend()\n\nThere is a deadlock in oxu_bus_suspend(), which is shown below:\n\n (Thread 1) | (Thread 2)\n | timer_action()\noxu_bus_suspend() | mod_timer()\n spin_lock_irq() //(1) | (wait a time)\n ... | oxu_watchdog()\n del_timer_sync() | spin_lock_irq() //(2)\n (wait timer to stop) | ...\n\nWe hold oxu-\u003elock in position (1) of thread 1, and use\ndel_timer_sync() to wait timer to stop, but timer handler\nalso need oxu-\u003elock in position (2) of thread 2. As a result,\noxu_bus_suspend() will block forever.\n\nThis patch extracts del_timer_sync() from the protection of\nspin_lock_irq(), which could let timer handler to obtain\nthe needed lock.",
"id": "GHSA-x97p-h9j9-9889",
"modified": "2025-04-14T21:32:21Z",
"published": "2025-04-14T21:32:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49313"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2dcec0bc142be2096af71a5703d63237127db204"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4187b291a76664a3c03d3f0d9bfadc8322881868"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4d378f2ae58138d4c55684e1d274e7dd94aa6524"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9b58d255f27b0ed6a2e43208960864d67579db58"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a3d380188bde8900c3f604e82b56572896499124"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b97aae8b43b718314012e8170b7e03dbfd2e7677"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d888753872190abd18f68a7d77b9c7c367f0a7ab"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f8242044c91cafbba9e320b0fb31abf2429a3221"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ffe9440d698274c6462d2e304562c6ddfc8c84df"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
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