Vulnerability identifier: #VU56352

Vulnerability risk: Low

CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1958

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
QCA6574A
Mobile applications / Mobile firmware & hardware
QCA6595
Mobile applications / Mobile firmware & hardware
QCA6595AU
Mobile applications / Mobile firmware & hardware
QCA6696
Mobile applications / Mobile firmware & hardware
SA6145P
Mobile applications / Mobile firmware & hardware
SA6150P
Mobile applications / Mobile firmware & hardware
SA8145P
Mobile applications / Mobile firmware & hardware
SA8150P
Mobile applications / Mobile firmware & hardware
SA8155
Mobile applications / Mobile firmware & hardware
SA8155P
Mobile applications / Mobile firmware & hardware
SA8195P
Mobile applications / Mobile firmware & hardware
SD480
Mobile applications / Mobile firmware & hardware
SD778G
Mobile applications / Mobile firmware & hardware
SD780G
Mobile applications / Mobile firmware & hardware
SD8885G
Mobile applications / Mobile firmware & hardware
SDA429W
Mobile applications / Mobile firmware & hardware
SM7325
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
WCD9385
Mobile applications / Mobile firmware & hardware
WCN3610
Mobile applications / Mobile firmware & hardware
WCN3620
Mobile applications / Mobile firmware & hardware
WCN3660B
Mobile applications / Mobile firmware & hardware
WCN3980
Mobile applications / Mobile firmware & hardware
WCN3988
Mobile applications / Mobile firmware & hardware
WCN3991
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
WSA8830
Mobile applications / Mobile firmware & hardware
WSA8835
Mobile applications / Mobile firmware & hardware
QCA6574AU
Hardware solutions / Firmware
SA6155P
Hardware solutions / Firmware

Vendor: Qualcomm

Description

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

The vulnerability exists due to a use-after-free error caused by a race condition in fastrpc kernel driver for dynamic process creation in DSP Service. A local user can escalate privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

QCA6574A: All versions

QCA6574AU: All versions

QCA6595: All versions

QCA6595AU: All versions

QCA6696: All versions

SA6145P: All versions

SA6150P: All versions

SA6155P: All versions

SA8145P: All versions

SA8150P: All versions

SA8155: All versions

SA8155P: All versions

SA8195P: All versions

SD480: All versions

SD778G: All versions

SD780G: All versions

SD8885G: All versions

SDA429W: All versions

SM7325: All versions

WCD9341: All versions

WCD9370: All versions

WCD9375: All versions

WCD9380: All versions

WCD9385: All versions

WCN3610: All versions

WCN3620: All versions

WCN3660B: All versions

WCN3980: All versions

WCN3988: All versions

WCN3991: All versions

WCN6740: All versions

WCN6750: All versions

WCN6850: All versions

WCN6851: All versions

WCN6855: All versions

WCN6856: All versions

WSA8830: All versions

WSA8835: All versions

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External links
http://www.qualcomm.com/company/product-security/bulletins/september-2021-bulletin
http://source.codeaurora.org/quic/la/kernel/msm-5.4/commit/?id=ac2db530fb55334be2f5cb3950ad89fb59cc6b75

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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.