fkie_cve-2022-50421
Vulnerability from fkie_nvd
Published
2025-10-01 12:15
Modified
2025-10-02 19:12
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: rpmsg: char: Avoid double destroy of default endpoint The rpmsg_dev_remove() in rpmsg_core is the place for releasing this default endpoint. So need to avoid destroying the default endpoint in rpmsg_chrdev_eptdev_destroy(), this should be the same as rpmsg_eptdev_release(). Otherwise there will be double destroy issue that ept->refcount report warning: refcount_t: underflow; use-after-free. Call trace: refcount_warn_saturate+0xf8/0x150 virtio_rpmsg_destroy_ept+0xd4/0xec rpmsg_dev_remove+0x60/0x70 The issue can be reproduced by stopping remoteproc before closing the /dev/rpmsgX.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3f20ef7a845c2c8d7ec82ecffa20d95cab5ecfeb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/467233a4ac29b215d492843d067a9f091e6bf0c5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef828a39d6a7028836eaf37df3ad568c8c2dd6f9
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrpmsg: char: Avoid double destroy of default endpoint\n\nThe rpmsg_dev_remove() in rpmsg_core is the place for releasing\nthis default endpoint.\n\nSo need to avoid destroying the default endpoint in\nrpmsg_chrdev_eptdev_destroy(), this should be the same as\nrpmsg_eptdev_release(). Otherwise there will be double destroy\nissue that ept-\u003erefcount report warning:\n\nrefcount_t: underflow; use-after-free.\n\nCall trace:\n refcount_warn_saturate+0xf8/0x150\n virtio_rpmsg_destroy_ept+0xd4/0xec\n rpmsg_dev_remove+0x60/0x70\n\nThe issue can be reproduced by stopping remoteproc before\nclosing the /dev/rpmsgX."
    }
  ],
  "id": "CVE-2022-50421",
  "lastModified": "2025-10-02T19:12:17.160",
  "metrics": {},
  "published": "2025-10-01T12:15:33.380",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3f20ef7a845c2c8d7ec82ecffa20d95cab5ecfeb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/467233a4ac29b215d492843d067a9f091e6bf0c5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ef828a39d6a7028836eaf37df3ad568c8c2dd6f9"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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