CVE-2021-35465 Information

Description

Certain Arm products before 2021-08-23 do not properly consider the effect of exceptions on a VLLDM instruction. A Non-secure handler may have read or write access to part of a Secure context. This affects Arm Cortex-M33 r0p0 through r1p0 Arm Cortex-M35P r0 Arm Cortex-M55 r0p0 through r1p0 and Arm China STAR-MC1 (in the STAR SE configuration).

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Reference

https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerability https://developer.arm.com/support/arm-security-updates

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

3.4