Linux Kernel up to 6.0.6 ufx_ops_destroy use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.0.6. It has been classified as critical. This impacts the function ufx_ops_destroy. Performing a manipulation results in use after free. This vulnerability is cataloged as CVE-2022-50767. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.0.6. This affects the function ufx_ops_destroy. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: Fix several use-after-free bugs Several types of UAFs can occur when physically removing a USB device. Adds ufx_ops_destroy() function to .fb_destroy of fb_ops, and in this function, there is kref_put() that finally calls ufx_free(). This fix prevents multiple UAFs.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-50767 since 12/24/2025. The exploitability is told to be easy. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/21/2026).

The vulnerability scanner Nessus provides a plugin with the ID 280045 (Linux Distros Unpatched Vulnerability : CVE-2022-50767), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.9.332, 4.14.298, 4.19.264, 5.4.223, 5.10.153, 5.15.77 or 6.0.7 eliminates this vulnerability. Applying the patch 6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f/3f40852d671072836fb7ae331a1f28a24223c4e8/70faf9d9b6cc74418716bbf76fe75bd2da10ad4a/5385af2f89bc352fb70753ab41b2bb036190141f/d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86/cc6a7249842fceda7574ceb63275a2d5e99d2862/8d924b262f3178a9b17c17d4306a9f426c508bd9/cc67482c9e5f2c80d62f623bcc347c29f9f648e1 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (280045) and CERT Bund (WID-SEC-2025-2929). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 280045
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2022-50767

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.9.332/4.14.298/4.19.264/5.4.223/5.10.153/5.15.77/6.0.7
Patch: 6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f/3f40852d671072836fb7ae331a1f28a24223c4e8/70faf9d9b6cc74418716bbf76fe75bd2da10ad4a/5385af2f89bc352fb70753ab41b2bb036190141f/d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86/cc6a7249842fceda7574ceb63275a2d5e99d2862/8d924b262f3178a9b17c17d4306a9f426c508bd9/cc67482c9e5f2c80d62f623bcc347c29f9f648e1

Timelineinfo

12/24/2025 Advisory disclosed
12/24/2025 +0 days CVE reserved
12/24/2025 +0 days VulDB entry created
04/21/2026 +118 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-50767 (🔒)
GCVE (CVE): GCVE-0-2022-50767
GCVE (VulDB): GCVE-100-338259
CERT Bund: WID-SEC-2025-2929 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 12/24/2025 16:37
Updated: 04/21/2026 08:19
Changes: 12/24/2025 16:37 (58), 12/27/2025 03:59 (2), 12/29/2025 22:39 (7), 04/21/2026 08:19 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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