#VU54536 Buffer overflow in Qualcomm products - CVE-2021-1931

Vulnerability identifier: #VU54536

Vulnerability risk: Low

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

CVE-ID: CVE-2021-1931

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: Public exploit is available

Vulnerable software:
AQT1000
AR8031
AR8035
CSRA6620
CSRA6640
CSRB31024
FSM10055
FSM10056
QCA6310
QCA6320
QCA6335
QCA6390
QCA6391
QCA6420
QCA6421
QCA6426
QCA6430
QCA6431
QCA6436
QCA6564
QCA6564A
QCA6564AU
QCA6574
QCA6574A
QCA6584AU
QCA6595AU
QCA6696
QCA8337
QCM2290
QCM4290
QCM6125
QCS2290
QCS410
QCS4290
QCS603
QCS610
QCS6125
SA415M
SA6145P
SA6150P
SA6155
SA8145P
SA8150P
SA8155
SA8155P
SA8195P
SD8C
SD8CX
SD460
SD480
SD660
SD662
SD678
SD6905G
SD720G
SD750G
SD765
SD765G
SD768G
SD778G
SD780G
SD8655G
SD870
SD8885G
SDM830
SDX50M
SDX55M
SDXR1
SDXR25G
SM4125
SM6250
SM6250P
SM7250P
SM7315
SM7325P
WCD9326
WCD9335
WCD9340
WCD9341
WCD9370
WCD9371
WCD9375
WCD9380
WCD9385
WCN3910
WCN3950
WCN3980
WCN3988
WCN3990
WCN3991
WCN3998
WCN3999
WCN6740
WCN6750
WCN6850
WCN6851
WCN6856
WSA8810
WSA8815
WSA8830
WSA8835
QCA6174A
QCA6574AU
QCA9377
QCS405
QCS605
SA6155P
SD636
SD675
SD665
SD670
SD710
SD730
SD835
SD845
SD855
SD888
SDM630
SDX24
SDX55

Software vendor:
Qualcomm

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

The vulnerability exists due to improper validation of buffer length while processing fast boot commands. A local application can trigger memory corruption and execute arbitrary code with elevated privileges.

Install updates from vendor's website.

• https://www.qualcomm.com/company/product-security/bulletins/july-2021-bulletin
• https://source.codeaurora.org/quic/le/abl/tianocore/edk2/commit/?id=0727b7b0d4cafb091397b76f75a3a4f66852a361