ghsa-jv3r-47pw-5225
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
media: streamzap: fix race between device disconnection and urb callback
Syzkaller has reported a general protection fault at function ir_raw_event_store_with_filter(). This crash is caused by a NULL pointer dereference of dev->raw pointer, even though it is checked for NULL in the same function, which means there is a race condition. It occurs due to the incorrect order of actions in the streamzap_disconnect() function: rc_unregister_device() is called before usb_kill_urb(). The dev->raw pointer is freed and set to NULL in rc_unregister_device(), and only after that usb_kill_urb() waits for in-progress requests to finish.
If rc_unregister_device() is called while streamzap_callback() handler is not finished, this can lead to accessing freed resources. Thus rc_unregister_device() should be called after usb_kill_urb().
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
{
"affected": [],
"aliases": [
"CVE-2025-22027"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-16T15:15:55Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: streamzap: fix race between device disconnection and urb callback\n\nSyzkaller has reported a general protection fault at function\nir_raw_event_store_with_filter(). This crash is caused by a NULL pointer\ndereference of dev-\u003eraw pointer, even though it is checked for NULL in\nthe same function, which means there is a race condition. It occurs due\nto the incorrect order of actions in the streamzap_disconnect() function:\nrc_unregister_device() is called before usb_kill_urb(). The dev-\u003eraw\npointer is freed and set to NULL in rc_unregister_device(), and only\nafter that usb_kill_urb() waits for in-progress requests to finish.\n\nIf rc_unregister_device() is called while streamzap_callback() handler is\nnot finished, this can lead to accessing freed resources. Thus\nrc_unregister_device() should be called after usb_kill_urb().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.",
"id": "GHSA-jv3r-47pw-5225",
"modified": "2025-05-06T18:30:36Z",
"published": "2025-04-16T15:34:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-22027"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/15483afb930fc2f883702dc96f80efbe4055235e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/30ef7cfee752ca318d5902cb67b60d9797ccd378"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4db62b60af2ccdea6ac5452fd20e29587ed85f57"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8760da4b9d44c36b93b6e4cf401ec7fe520015bd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/adf0ddb914c9e5b3e50da4c97959e82de2df75c3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e11652a6514ec805440c1bb3739e6c6236fffcc7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f1d518c0bad01abe83c2df880274cb6a39f4a457"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f656cfbc7a293a039d6a0c7100e1c846845148c1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.