CVE-2023-34320

MEDIUM

ARM Cortex-A77 Firmware - Denial of Service via Improper Locking in PAR_EL1 Register Handling

Title source: llm
STIX 2.1

Description

Cortex-A77 cores (r0p0 and r1p0) are affected by erratum 1508412 where software, under certain circumstances, could deadlock a core due to the execution of either a load to device or non-cacheable memory, and either a store exclusive or register read of the Physical Address Register (PAR_EL1) in close proximity.

References (2)

Core 2

Scores

CVSS v3 5.5
EPSS 0.0010
EPSS Percentile 28.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-667
Status published
Products (3)
arm/cortex-a77_firmware r0p0
arm/cortex-a77_firmware r1p0
xen/xen
Published Dec 08, 2023
Tracked Since Feb 18, 2026