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

Vulnerability identifier: #VU55528

CSH Severity: Low

CVSS v4: 5.4 [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]

CVE-ID: CVE-2021-1978

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

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.

SDM630
SDX55
SD888
SD855
SD835
QCS405
MSM8953
MSM8917
APQ8053
SD730
SD670
SD665
APQ8017
SD675
SD636
QCS605
WCD9340
SM7325
SM7250
SM6250P
SM6250
SM4125
SDXR25G
SDXR1
SDX55M
SDX50M
WCD9370
SD8885G
SD870
SD8655G
SD780G
SD778G
SD768G
SD765G
WCN3991
WSA8835
WSA8830
WSA8815
WSA8810
WCN6856
WCN6851
WCN6850
WCN6750
WCN6740
WCN3999
WCN3998
SD765
WCN3988
WCN3950
WCN3910
WCN3680B
WCN3680
WCN3660B
WCN3615
WCD9385
WCD9380
WCD9375
QCA6390
QCS2290
QCM6125
QCM4290
QCM2290
QCA8337
QCA6436
QCA6430
QCA6426
QCA6420
QCA6391
QCS4290
QCA6320
QCA6310
CSRA6640
CSRA6620
AR8035
AR8031
AQT1000
SD439
SD750G
SD720G
SD6905G
SD678
SD662
SD632
SD480
SD460
SD429
SD455
Qualcomm215
QCX315
QCS6125
QCS610
QCS603

Install updates from vendor's website.

• 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

• Multiple vulnerabilities in Qualcomm chipsets