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MediumFix available

media: streamzap: fix race between device disconnection and urb callback

Type: advisorySources: OSV

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.

Products
Kernel
Affected versions
Not specified
Fixed versions
5.10.237, 5.15.181, 6.1.134, 6.12.23, 6.13.11, 6.14.2, 6.6.87
CVEs
CVE-2025-22027
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 15:45 UTC · Revision 1

Source evidence

media: streamzap: fix race between device disconnection and urb callback

core-osv · Original source

Published 16 Apr 2025, 14:11 UTC

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.

osv:CVE-2025-22027

Kernel

Fixed versions: 5.10.237, 5.15.181, 6.1.134, 6.6.87, 6.12.23, 6.13.11, 6.14.2

Complete source record
{
  "id": "30e21fd808f50395db07a83d46eea0c2c9f7223a528e7d8c8b77349130984bbd",
  "url": "https://osv.dev/vulnerability/CVE-2025-22027",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "media: streamzap: fix race between device disconnection and urb callback",
    "summary": "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.",
    "evidence": "osv:CVE-2025-22027",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.237",
            "evidence": "/affected/1/ranges"
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            "value": "5.15.181",
            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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          {
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          {
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            "evidence": "/affected/1/ranges"
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          {
            "value": "6.14.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-22027",
      "aliases": [
        "CVE-2025-22027"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
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                {
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                {
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22027.json"
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        {
          "ranges": [
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              "type": "ECOSYSTEM",
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                {
                  "introduced": "2.6.36"
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                  "fixed": "5.10.237"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
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                {
                  "fixed": "5.15.181"
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              ]
            },
            {
              "type": "ECOSYSTEM",
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                  "introduced": "5.16.0"
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              ]
            },
            {
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            {
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                  "introduced": "6.7.0"
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            },
            {
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                {
                  "introduced": "6.13.0"
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                {
                  "fixed": "6.13.11"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
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          ],
          "package": {
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            "ecosystem": "Linux"
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          "database_specific": {
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      ],
      "modified": "2026-10-28T02:30:30.310665311Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/15483afb930fc2f883702dc96f80efbe4055235e",
        "https://git.kernel.org/stable/c/30ef7cfee752ca318d5902cb67b60d9797ccd378",
        "https://git.kernel.org/stable/c/4db62b60af2ccdea6ac5452fd20e29587ed85f57",
        "https://git.kernel.org/stable/c/8760da4b9d44c36b93b6e4cf401ec7fe520015bd",
        "https://git.kernel.org/stable/c/adf0ddb914c9e5b3e50da4c97959e82de2df75c3",
        "https://git.kernel.org/stable/c/e11652a6514ec805440c1bb3739e6c6236fffcc7",
        "https://git.kernel.org/stable/c/f1d518c0bad01abe83c2df880274cb6a39f4a457",
        "https://git.kernel.org/stable/c/f656cfbc7a293a039d6a0c7100e1c846845148c1",
        "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html",
        "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22027.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-22027",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22027.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-22027",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496963,
  "published_at": "2025-04-16T14:11:48.21+00:00"
}