Vulnerability Database

309,469

Total vulnerabilities in the database

CVE-2022-49951

In the Linux kernel, the following vulnerability has been resolved:

firmware_loader: Fix use-after-free during unregister

In the following code within firmware_upload_unregister(), the call to device_unregister() could result in the dev_release function freeing the fw_upload_priv structure before it is dereferenced for the call to module_put(). This bug was found by the kernel test robot using CONFIG_KASAN while running the firmware selftests.

device_unregister(&fw_sysfs->dev); module_put(fw_upload_priv->module);

The problem is fixed by copying fw_upload_priv->module to a local variable for use when calling device_unregister().

  • Published: Jun 18, 2025
  • Updated: Nov 15, 2025
  • CVE: CVE-2022-49951
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.8
  • AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWEs:

Software From Fixed in
linux / linux_kernel 5.19 5.19.8
linux / linux_kernel 6.0-rc1 6.0-rc1.x
linux / linux_kernel 6.0-rc2 6.0-rc2.x
linux / linux_kernel 6.0-rc3 6.0-rc3.x