Buffer overflow in Samsung Mobile Firmware - CVE-2021-25339
Published: November 10, 2022
Vulnerability identifier: #VU69227
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-25339
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local application to escalate privileges on the system.
The vulnerability exists due to a boundary error in HArx. A local application can trigger memory corruption via specially crafted HArx HVC call and execute arbitrary code with kernel privileges.
Affected software
Samsung Mobile Firmware
How to mitigate CVE-2021-25339
Install updates from vendor's website.
Samsung Mobile Firmware - update to SMR-MAR-2021