Linux Kernel up to 6.0.2 wifi mt7921_acpi_read use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.6$5k-$25k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.0.2. Affected is the function mt7921_acpi_read of the component wifi. The manipulation results in use after free. This vulnerability was named CVE-2022-50852. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.0.2. Affected is the function mt7921_acpi_read of the component wifi. 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. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: fix use after free in mt7921_acpi_read() Don't dereference "sar_root" after it has been freed.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2022-50852 since 12/30/2025. The exploitability is told to be easy. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 04/26/2026).

Upgrading to version 6.0.3 eliminates this vulnerability. Applying the patch 3ed0b382cb36f6dac9f93b3a5533cfcd699409a5/e7de4b4979bd8d313ec837931dde936653ca82ea 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 vulnerability database at CERT Bund (WID-SEC-2025-2941). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • IBM Power Hardware Management Console
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • IBM DataPower Gateway

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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.0.3
Patch: 3ed0b382cb36f6dac9f93b3a5533cfcd699409a5/e7de4b4979bd8d313ec837931dde936653ca82ea

Timelineinfo

12/30/2025 Advisory disclosed
12/30/2025 +0 days CVE reserved
12/30/2025 +0 days VulDB entry created
04/26/2026 +117 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-50852 (🔒)
GCVE (CVE): GCVE-0-2022-50852
GCVE (VulDB): GCVE-100-338898
CERT Bund: WID-SEC-2025-2941 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 12/30/2025 16:17
Updated: 04/26/2026 02:53
Changes: 12/30/2025 16:17 (59), 12/31/2025 22:22 (7), 01/27/2026 16:11 (1), 04/26/2026 02:53 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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