Vulnerability identifier: #VU54540

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-2021-1940

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
AQT1000
Mobile applications / Mobile firmware & hardware
AR8031
Mobile applications / Mobile firmware & hardware
AR8035
Mobile applications / Mobile firmware & hardware
CSRA6620
Mobile applications / Mobile firmware & hardware
CSRA6640
Mobile applications / Mobile firmware & hardware
FSM10055
Mobile applications / Mobile firmware & hardware
FSM10056
Mobile applications / Mobile firmware & hardware
QCA6391
Mobile applications / Mobile firmware & hardware
QCA6420
Mobile applications / Mobile firmware & hardware
QCA6430
Mobile applications / Mobile firmware & hardware
QCA6564
Mobile applications / Mobile firmware & hardware
QCA6564A
Mobile applications / Mobile firmware & hardware
QCA6564AU
Mobile applications / Mobile firmware & hardware
QCA6574
Mobile applications / Mobile firmware & hardware
QCA6574A
Mobile applications / Mobile firmware & hardware
QCA6584AU
Mobile applications / Mobile firmware & hardware
QCA6595AU
Mobile applications / Mobile firmware & hardware
QCA6696
Mobile applications / Mobile firmware & hardware
QCA8337
Mobile applications / Mobile firmware & hardware
QCM6125
Mobile applications / Mobile firmware & hardware
QCS410
Mobile applications / Mobile firmware & hardware
QCS610
Mobile applications / Mobile firmware & hardware
QCS6125
Mobile applications / Mobile firmware & hardware
SA415M
Mobile applications / Mobile firmware & hardware
SA515M
Mobile applications / Mobile firmware & hardware
SA6145P
Mobile applications / Mobile firmware & hardware
SA6155
Mobile applications / Mobile firmware & hardware
SA8155
Mobile applications / Mobile firmware & hardware
SA8155P
Mobile applications / Mobile firmware & hardware
SA8195P
Mobile applications / Mobile firmware & hardware
SD8C
Mobile applications / Mobile firmware & hardware
SD8CX
Mobile applications / Mobile firmware & hardware
SD660
Mobile applications / Mobile firmware & hardware
SD678
Mobile applications / Mobile firmware & hardware
SD720G
Mobile applications / Mobile firmware & hardware
SDA429W
Mobile applications / Mobile firmware & hardware
SDX50M
Mobile applications / Mobile firmware & hardware
SDX55M
Mobile applications / Mobile firmware & hardware
SM6250
Mobile applications / Mobile firmware & hardware
SM6250P
Mobile applications / Mobile firmware & hardware
WCD9335
Mobile applications / Mobile firmware & hardware
WCD9340
Mobile applications / Mobile firmware & hardware
WCD9341
Mobile applications / Mobile firmware & hardware
WCD9370
Mobile applications / Mobile firmware & hardware
WCD9375
Mobile applications / Mobile firmware & hardware
WCD9380
Mobile applications / Mobile firmware & hardware
WCN3610
Mobile applications / Mobile firmware & hardware
WCN3620
Mobile applications / Mobile firmware & hardware
WCN3660B
Mobile applications / Mobile firmware & hardware
WCN3950
Mobile applications / Mobile firmware & hardware
WCN3980
Mobile applications / Mobile firmware & hardware
WCN3988
Mobile applications / Mobile firmware & hardware
WCN3990
Mobile applications / Mobile firmware & hardware
WCN3991
Mobile applications / Mobile firmware & hardware
WCN3998
Mobile applications / Mobile firmware & hardware
WCN3999
Mobile applications / Mobile firmware & hardware
WSA8810
Mobile applications / Mobile firmware & hardware
WSA8815
Mobile applications / Mobile firmware & hardware
QCA6574AU
Hardware solutions / Firmware
QCS405
Hardware solutions / Firmware
SA6155P
Hardware solutions / Firmware
SD675
Hardware solutions / Firmware
SD665
Hardware solutions / Firmware
SD730
Hardware solutions / Firmware
SD855
Hardware solutions / Firmware
SDX55
Hardware solutions / Firmware

Vendor: Qualcomm

Description

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

The vulnerability exists due to a use-after-free error in neural processing when handling firmware responses. A malicious application can trigger a use-after-free error and escalate privileges on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

AQT1000: All versions

AR8031: All versions

AR8035: All versions

CSRA6620: All versions

CSRA6640: All versions

FSM10055: All versions

FSM10056: All versions

QCA6391: All versions

QCA6420: All versions

QCA6430: All versions

QCA6564: All versions

QCA6564A: All versions

QCA6564AU: All versions

QCA6574: All versions

QCA6574A: All versions

QCA6574AU: All versions

QCA6584AU: All versions

QCA6595AU: All versions

QCA6696: All versions

QCA8337: All versions

QCM6125: All versions

QCS405: All versions

QCS410: All versions

QCS610: All versions

QCS6125: All versions

SA415M: All versions

SA515M: All versions

SA6145P: All versions

SA6155: All versions

SA6155P: All versions

SA8155: All versions

SA8155P: All versions

SA8195P: All versions

SD675: All versions

SD8C: All versions

SD8CX: All versions

SD660: All versions

SD665: All versions

SD678: All versions

SD720G: All versions

SD730: All versions

SD855: All versions

SDA429W: All versions

SDX50M: All versions

SDX55: All versions

SDX55M: All versions

SM6250: All versions

SM6250P: All versions

WCD9335: All versions

WCD9340: All versions

WCD9341: All versions

WCD9370: All versions

WCD9375: All versions

WCD9380: All versions

WCN3610: All versions

WCN3620: All versions

WCN3660B: All versions

WCN3950: All versions

WCN3980: All versions

WCN3988: All versions

WCN3990: All versions

WCN3991: All versions

WCN3998: All versions

WCN3999: All versions

WSA8810: All versions

WSA8815: All versions

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External links
http://www.qualcomm.com/company/product-security/bulletins/july-2021-bulletin
http://source.codeaurora.org/quic/la/kernel/msm-4.14/commit/?id=8001ee96d68c2ba22f7eced2f44393f93a3917c0

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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.