Use After Free Vulnerability in MediaTek Sched Driver
CVE-2022-21775

6.7MEDIUM

Key Information:

Vendor

MediaTek
Status
Mt6761, Mt6762, Mt6763, Mt6765, Mt6768, Mt6769, Mt6771, Mt6779, Mt6781, Mt6785, Mt6789, Mt6795, Mt6797, Mt6799, Mt6833, Mt6853, Mt6853t, Mt6873, Mt6875, Mt6877, Mt6879, Mt6883, Mt6885, Mt6889, Mt6891, Mt6893, Mt6895, Mt8167, Mt8167s, Mt8168, Mt8173, Mt8185, Mt8321, Mt8362a, Mt8365, Mt8385, Mt8666, Mt8675, Mt8768, Mt8786, Mt8788, Mt8789, Mt8791, Mt8797
Vendor
CVE Published:
6 July 2022

What is CVE-2022-21775?

A vulnerability in the MediaTek sched driver has been identified where improper locking can lead to a use after free condition. This flaw could potentially allow an attacker to escalate privileges on a local system without requiring user interaction. The issue, linked to Patch ID ALPS06479032, emphasizes the importance of proper memory management in driver design and highlights the need for timely updates to ensure system integrity.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

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Deploy the Patch

Affected Version(s)

MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6795, MT6797, MT6799, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT8167, MT8167S, MT8168, MT8173, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8666, MT8675, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797 Android 11.0, 12.0

References

https://corp.mediatek.com/product-security-bulletin/July-...
x_refsource_MISC

CVSS V3.1

Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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