PT-2021-1520 · Google+4 · Android Kernel+4

Published 2021-12-12 · Updated 2022-07-13 · CVE-2021-39685

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Android kernel versions (affected versions not specified)

Description The issue is related to the USB gadget subsystem of the Linux kernel, which provides a software interface for creating client USB devices and simulating USB devices. It involves an out of bounds write due to an incorrect flag check, potentially leading to local escalation of privilege with no additional execution privileges needed. User interaction is not required for exploitation. The vulnerability could allow an attacker to access confidential data, compromise data integrity, and cause a denial of service. It may also lead to information leakage from the kernel, crash, or execution of arbitrary code at the kernel level.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ASB-A-210292376

BDU:2022-05885

CVE-2021-39685

DLA-2940-1

DLA-2941-1

DSA-5050-1

DSA-5096-1

MGASA-2021-0574

MGASA-2021-0575

OESA-2021-1475

OPENSUSE-SU-2022:0363-1

OPENSUSE-SU-2022:0370-1

OPENSUSE-SU-2022_0363-1

OPENSUSE-SU-2022_0370-1

SUSE-SU-2022:0363-1

SUSE-SU-2022:0370-1

SUSE-SU-2022:0543-1

USN-5278-1

USN-5294-1

USN-5294-2

USN-5297-1

USN-5298-1

USN-5337-1

USN-5368-1

USN-5505-1

USN-5513-1

Affected Products

Android Kernel

Astra Linux

Linuxmint

Suse

Ubuntu

References · 206

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/vmwgfx_fd_priv_esc.rb · Exploit
• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/docker_cgroup_escape.rb · Exploit
• 🔥 https://github.com/tr3ee/CVE-2022-23222 · Exploit
• 🔥 https://github.com/Crusaders-of-Rust/CVE-2022-0185 · Exploit
• 🔥 https://github.com/plummm/CVE-2022-27666 · Exploit
• 🔥 https://github.com/nrb547/kernel-exploitation/blob/main/cve-2021-3609/cve-2021-3609.md · Exploit
• 🔥 https://github.com/PaloAltoNetworks/can-ctr-escape-cve-2022-0492 · Exploit
• 🔥 https://github.com/chenaotian/CVE-2022-0185 · Exploit
• 🔥 https://github.com/chenaotian/CVE-2022-0492 · Exploit
• 🔥 https://github.com/veritas501/CVE-2022-0185-PipeVersion · Exploit
• 🔥 https://github.com/meowmeowxw/CVE-2022-24122 · Exploit
• 🔥 https://github.com/SofianeHamlaoui/CVE-2022-0492-Checker · Exploit
• 🔥 https://github.com/szymonh/inspector-gadget · Exploit
• 🔥 https://github.com/PenteraIO/CVE-2022-23222-POC · Exploit
• 🔥 https://github.com/discordianfish/cve-2022-0185-crash-poc · Exploit