#VU63103 Use of Out-of-range Pointer Offset in Qualcomm products - CVE-2021-35098

Vulnerability identifier: #VU63103

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:U/U:Clear

CVE-ID: CVE-2021-35098

CWE-ID: CWE-823

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
APQ8053
APQ8096AU
MDM9150
MDM9640
MDM9650
MSM8953
QCA6174A
QCA6574AU
QCA9377
QCS405
QCS605
SD855
SDM429W
SDX55
AQT1000
AR8031
CSRA6620
CSRA6640
QCA6390
QCA6391
QCA6420
QCA6426
QCA6430
QCA6436
QCA6574A
QCM4290
QCM6125
QCS410
QCS4290
QCS603
QCS610
QCS6125
QRB5165
QRB5165M
QRB5165N
Qualcomm215
SA515M
SD429
SD460
SD480
SD662
SD680
SD690 5G
SD695
SD750G
SD765
SD765G
SD768G
SD778G
SD780G
SD865 5G
SD870
SD888 5G
SDX12
SDX55M
SDXR2 5G
SM7250P
SM7325P
WCD9326
WCD9335
WCD9341
WCD9370
WCD9375
WCD9380
WCD9385
WCN3615
WCN3620
WCN3660B
WCN3680
WCN3680B
WCN3950
WCN3980
WCN3988
WCN3990
WCN3991
WCN3998
WCN6740
WCN6750
WCN6850
WCN6851
WCN6855
WCN6856
WSA8810
WSA8815
WSA8830
WSA8835

Software vendor:
Qualcomm

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

The vulnerability exists due to an improper validation of session id in PCM routing process. A local appliction can trigger a use of out-of-range pointer offset and escalate privileges on the system.

Install updates from vendor's website.

• https://docs.qualcomm.com/bundle/publicresource/HD-10000-1/topics/may-2022-bulletin.html
• https://source.codeaurora.org/quic/qsdk/platform/vendor/opensource/audio-kernel/commit/?id=1d3fb0289f8f1c7f53027933ea9b3922dfc58d90