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).
References (2)
Core 2
Core References
Vendor Advisory x_refsource_misc
https://developer.arm.com/support/arm-security-updates
Vendor Advisory x_refsource_confirm
https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerability
Scores
CVSS v3
3.4
EPSS
0.0012
EPSS Percentile
30.4%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Details
Status
published
Products (4)
arm/china_star-mc1_firmware
arm/cortex-m33_firmware
r0p0 - r1p0
arm/cortex-m35p_firmware
r0
arm/cortex-m55_firmware
r0p0 - r1p0
Published
Aug 23, 2021
Tracked Since
Feb 18, 2026