VulnerabilityModified
CVE-2021-35465
Certain Arm products before 2021-08-23 do not properly consider the effect of exceptions on a VLLDM instruction.
LOW 3.4EPSS 0.30%
Does this matter?
Lower severity and a low EPSS score (0.30%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 3.4 LOWCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
- EPSS
- 0.30% probability · 22th percentile
- CISA KEV
- Not listed
- Affected
- arm/cortex-m33 firmware · arm/cortex-m35p firmware · arm/cortex-m55 firmware · arm/china star-mc1 firmware
- Source
- cve@mitre.org
References
- https://developer.arm.com/support/arm-security-updatesVendor Advisory
- https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerabilityVendor Advisory
- https://developer.arm.com/support/arm-security-updatesVendor Advisory
- https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerabilityVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.