#VU66964 Improper Handling of Exceptional Conditions in MediaTek products - CVE-2022-26455

Vulnerability identifier: #VU66964

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-26455

CWE-ID: CWE-755

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MT6789
Mobile applications / Mobile firmware & hardware
MT6855
Mobile applications / Mobile firmware & hardware
MT6879
Mobile applications / Mobile firmware & hardware
MT6895
Mobile applications / Mobile firmware & hardware
MT6983
Mobile applications / Mobile firmware & hardware

Vendor: MediaTek

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect error handling in gz. A local user can gain elevated privileges on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MT6789: All versions

MT6855: All versions

MT6879: All versions

MT6895: All versions

MT6983: All versions

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External links
https://corp.mediatek.com/product-security-bulletin/September-2022

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.