Description
When using Arm Cortex-M Security Extensions (CMSE), Secure stack contents can be leaked to Non-secure state via floating-point registers when a Secure to Non-secure function call is made that returns a floating-point value and when this is the first use of floating-point since entering Secure state. This allows an attacker to read a limited quantity of Secure stack contents with an impact on confidentiality. This issue is specific to code generated using LLVM-based compilers.
References (1)
Core 1
Core References
Vendor Advisory, Exploit
https://developer.arm.com/Arm%20Security%20Center/Cortex-M%20Security%20Extensions%20Vulnerability
Scores
CVSS v3
3.7
EPSS
0.0037
EPSS Percentile
58.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-226
Status
published
Products (5)
arm/arm_compiler_for_embedded
6.6 - 6.23
arm/arm_compiler_for_embedded_fusa
6.16
arm/arm_compiler_for_embedded_fusa
6.21
arm/arm_compiler_for_functional_safety
6.6
arm/clang
11.0.0 - 20.1.0
Published
Oct 31, 2024
Tracked Since
Feb 18, 2026