Use-after-free in Qualcomm products - CVE-2021-1927

Vulnerability identifier: #VU52820

CSH Severity: Low

CVSS v4: 8.5 [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]

CVE-ID: CVE-2021-1927

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to a use-after-free error in DSP Services within FastRPC driver. A local user can execute arbitrary code with elevated privileges.

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Google Android

Install updates from vendor's website.

Google Android - addressed in versions 8.1 2021-05-05, 9.0 2021-05-05, 10 2021-05-05, 11 2021-05-05

• https://www.qualcomm.com/company/product-security/bulletins/may-2021-bulletin
• https://source.codeaurora.org/quic/la/kernel/msm-4.14/commit/?id=85ecf9f98b520aa18e68ec426dc20fb63d02fd78

• Multiple vulnerabilities in Qualcomm chipsets
• Multiple vulnerabilities in Google Android