Vulnerability identifier: #VU57904

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1921

CWE-ID: CWE-367

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
AQT1000
Mobile applications / Mobile firmware & hardware
QCA6390
Mobile applications / Mobile firmware & hardware
QCA6391
Mobile applications / Mobile firmware & hardware
QCA6420
Mobile applications / Mobile firmware & hardware
QCA6421
Mobile applications / Mobile firmware & hardware
QCA6426
Mobile applications / Mobile firmware & hardware
QCA6430
Mobile applications / Mobile firmware & hardware
QCA6431
Mobile applications / Mobile firmware & hardware
QCA6436
Mobile applications / Mobile firmware & hardware
QCA6595
Mobile applications / Mobile firmware & hardware
QCM6490
Mobile applications / Mobile firmware & hardware
QCS6490
Mobile applications / Mobile firmware & hardware
QRB5165
Mobile applications / Mobile firmware & hardware
QRB5165N
Mobile applications / Mobile firmware & hardware
QSM8350
Mobile applications / Mobile firmware & hardware
SA8195P
Mobile applications / Mobile firmware & hardware
SD 8C
Mobile applications / Mobile firmware & hardware
SD 8CX
Mobile applications / Mobile firmware & hardware
SD778G
Mobile applications / Mobile firmware & hardware
SD780G
Mobile applications / Mobile firmware & hardware
SD865 5G
Mobile applications / Mobile firmware & hardware
SD870
Mobile applications / Mobile firmware & hardware
SD888 5G
Mobile applications / Mobile firmware & hardware
SDM830
Mobile applications / Mobile firmware & hardware
SDX55M
Mobile applications / Mobile firmware & hardware
SDXR2 5G
Mobile applications / Mobile firmware & hardware
SM7325
Mobile applications / Mobile firmware & hardware
WCD9340
Mobile applications / Mobile firmware & hardware
WCD9341
Mobile applications / Mobile firmware & hardware
WCD9360
Mobile applications / Mobile firmware & hardware
WCD9370
Mobile applications / Mobile firmware & hardware
WCD9375
Mobile applications / Mobile firmware & hardware
WCD9380
Mobile applications / Mobile firmware & hardware
WCD9385
Mobile applications / Mobile firmware & hardware
WCN3950
Mobile applications / Mobile firmware & hardware
WCN3980
Mobile applications / Mobile firmware & hardware
WCN3990
Mobile applications / Mobile firmware & hardware
WCN3998
Mobile applications / Mobile firmware & hardware
WCN6740
Mobile applications / Mobile firmware & hardware
WCN6750
Mobile applications / Mobile firmware & hardware
WCN6850
Mobile applications / Mobile firmware & hardware
WCN6851
Mobile applications / Mobile firmware & hardware
WCN6855
Mobile applications / Mobile firmware & hardware
WCN6856
Mobile applications / Mobile firmware & hardware
WCN7850
Mobile applications / Mobile firmware & hardware
WCN7851
Mobile applications / Mobile firmware & hardware
WHS9410
Mobile applications / Mobile firmware & hardware
WSA8810
Mobile applications / Mobile firmware & hardware
WSA8815
Mobile applications / Mobile firmware & hardware
WSA8830
Mobile applications / Mobile firmware & hardware
WSA8835
Mobile applications / Mobile firmware & hardware
QCA6574AU
Hardware solutions / Firmware
SA6155P
Hardware solutions / Firmware
SD675
Hardware solutions / Firmware
SD855
Hardware solutions / Firmware
SDX24
Hardware solutions / Firmware
SDX55
Hardware solutions / Firmware

Vendor: Qualcomm

Description

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to Improper handling of hypervisor unmap operations for concurrent memory operations. A local user can send a specially crafted data and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

AQT1000: All versions

QCA6390: All versions

QCA6391: All versions

QCA6420: All versions

QCA6421: All versions

QCA6426: All versions

QCA6430: All versions

QCA6431: All versions

QCA6436: All versions

QCA6574AU: All versions

QCA6595: All versions

QCM6490: All versions

QCS6490: All versions

QRB5165: All versions

QRB5165N: All versions

QSM8350: All versions

SA6155P: All versions

SA8195P: All versions

SD 8C: All versions

SD 8CX: All versions

SD675: All versions

SD778G: All versions

SD780G: All versions

SD855: All versions

SD865 5G: All versions

SD870: All versions

SD888 5G: All versions

SDM830: All versions

SDX24: All versions

SDX55: All versions

SDX55M: All versions

SDXR2 5G: All versions

SM7325: All versions

WCD9340: All versions

WCD9341: All versions

WCD9360: All versions

WCD9370: All versions

WCD9375: All versions

WCD9380: All versions

WCD9385: All versions

WCN3950: All versions

WCN3980: All versions

WCN3990: All versions

WCN3998: All versions

WCN6740: All versions

WCN6750: All versions

WCN6850: All versions

WCN6851: All versions

WCN6855: All versions

WCN6856: All versions

WCN7850: All versions

WCN7851: All versions

WHS9410: All versions

WSA8810: All versions

WSA8815: All versions

WSA8830: All versions

WSA8835: All versions

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External links
http://www.qualcomm.com/company/product-security/bulletins/november-2021-bulletin

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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.