#VU65104 Integer overflow in Pixel - CVE-2021-39732

Vulnerability identifier: #VU65104

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-2021-39732

CWE-ID: CWE-190

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Pixel
Mobile applications / Mobile firmware & hardware

Vendor: Google

Description

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

The vulnerability exists due to integer overflow in copy_io_entries of lwis_ioctl.c. A local application can trigger integer overflow and escalate privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Pixel: before 2022-03-05

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External links
https://source.android.com/security/bulletin/pixel/2022-03-01

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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.