#VU55528 Use-after-free in Qualcomm products - CVE-2021-1978

Cybersecurity Help s.r.o.

Published: 2021-08-03

Vulnerability identifier: #VU55528

Vulnerability risk: Low

CVSSv4.0: 2 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-1978

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vendor: Qualcomm

Description

The vulnerability allows a local attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when handling scheduled QMI callbacks at the time of deinitialization in WLAN HOST. An attacker with physical access to device can trigger a use-after-free error and compromise the affected device.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

APQ8017: All versions

APQ8053: All versions

AQT1000: All versions

AR8031: All versions

AR8035: All versions

CSRA6620: All versions

CSRA6640: All versions

MSM8917: All versions

MSM8953: All versions

QCA6310: All versions

QCA6320: All versions

QCA6390: All versions

QCA6391: All versions

QCA6420: All versions

QCA6426: All versions

QCA6430: All versions

QCA6436: All versions

QCA8337: All versions

QCM2290: All versions

QCM4290: All versions

QCM6125: All versions

QCS2290: All versions

QCS405: All versions

QCS4290: All versions

QCS603: All versions

QCS605: All versions

QCS610: All versions

QCS6125: All versions

QCX315: All versions

Qualcomm215: All versions

SD455: All versions

SD636: All versions

SD675: All versions

SD429: All versions

SD439: All versions

SD460: All versions

SD480: All versions

SD632: All versions

SD662: All versions

SD665: All versions

SD670: All versions

SD678: All versions

SD6905G: All versions

SD720G: All versions

SD730: All versions

SD750G: All versions

SD765: All versions

SD765G: All versions

SD768G: All versions

SD778G: All versions

SD780G: All versions

SD835: All versions

SD855: All versions

SD8655G: All versions

SD870: All versions

SD888: All versions

SD8885G: All versions

SDM630: All versions

SDX50M: All versions

SDX55: All versions

SDX55M: All versions

SDXR1: All versions

SDXR25G: All versions

SM4125: All versions

SM6250: All versions

SM6250P: All versions

SM7250: All versions

SM7325: All versions

WCD9340: All versions

WCD9370: All versions

WCD9375: All versions

WCD9380: All versions

WCD9385: All versions

WCN3615: All versions

WCN3660B: All versions

WCN3680: All versions

WCN3680B: All versions

WCN3910: All versions

WCN3950: All versions

WCN3988: All versions

WCN3991: All versions

WCN3998: All versions

WCN3999: All versions

WCN6740: All versions

WCN6750: All versions

WCN6850: All versions

WCN6851: All versions

WCN6856: All versions

WSA8810: All versions

WSA8815: All versions

WSA8830: All versions

WSA8835: All versions

External links
https://www.qualcomm.com/company/product-security/bulletins/august-2021-bulletin
https://source.codeaurora.org/quic/la/platform/external/wpa_supplicant_8/commit?id=ddffe981e88146adf777ce64c1c2dac2e1dad05e

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

Latest bulletins with this vulnerability

Multiple vulnerabilities in Qualcomm chipsets