CVE-2022-49951

HIGH EPSS 10.8%
Published Jun 18, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Jun 18, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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().

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
10.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥5.19  –  <5.19.8
linuxlinux_kernel6.0any
linuxlinux_kernel6.0any
linuxlinux_kernel6.0any

References 2

  • git.kernel.org https://git.kernel.org/stable/c/8b40c38e37492b5bdf8e95b46b5cca9517a9957a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d380d40930a674c520a5b55f3be1eb17dc634ebc
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/8b40c38e37492b5bdf8e95b46b5cca9517a9957a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d380d40930a674c520a5b55f3be1eb17dc634ebc
    Patch