What is the severity of CVE-2023-34320?

CVE-2023-34320 has a severity rating that indicates it could lead to system instability due to potential deadlocks in Cortex-A77 cores.

How do I fix CVE-2023-34320?

To address CVE-2023-34320, update the Cortex-A77 firmware to a version that includes the erratum mitigation.

Which versions of the Cortex-A77 firmware are affected by CVE-2023-34320?

CVE-2023-34320 affects the Cortex-A77 firmware versions r0p0 and r1p0.

What impact does CVE-2023-34320 have on system performance?

CVE-2023-34320 can cause deadlocks in the CPU which may lead to performance degradation or system hang.

Is there a workaround for CVE-2023-34320?

Currently, a specific workaround for CVE-2023-34320 has not been publicly documented, and applying the firmware update is recommended.

Vulnerability/
CVE-2023-34320

medium

5.5

CWE

667

1/8/2023

8/12/2023

13/12/2023

CVE-2023-34320: arm: Guests can trigger a deadlock on Cortex-A77

First published: Tue Aug 01 2023(Updated: )

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.

Credit: security@xen.org

Affected Software	Affected Version	How to fix
All of
Any of
Arm Cortex-A77 Firmware	=r0p0
Arm Cortex-A77 Firmware	=r1p0
Arm Cortex-A77 Firmware
Xen xen-unstable

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Reference Links

https://xenbits.xenproject.org/xsa/advisory-436.html

Frequently Asked Questions

What is the severity of CVE-2023-34320?
CVE-2023-34320 has a severity rating that indicates it could lead to system instability due to potential deadlocks in Cortex-A77 cores.
How do I fix CVE-2023-34320?
To address CVE-2023-34320, update the Cortex-A77 firmware to a version that includes the erratum mitigation.
Which versions of the Cortex-A77 firmware are affected by CVE-2023-34320?
CVE-2023-34320 affects the Cortex-A77 firmware versions r0p0 and r1p0.
What impact does CVE-2023-34320 have on system performance?
CVE-2023-34320 can cause deadlocks in the CPU which may lead to performance degradation or system hang.
Is there a workaround for CVE-2023-34320?
Currently, a specific workaround for CVE-2023-34320 has not been publicly documented, and applying the firmware update is recommended.

collector/oss-sec
alias/CVE-2023-34320
collector/mitre-cve
agent/type
agent/event
agent/last-modified-date
agent/softwarecombine
agent/first-publish-date
agent/title
agent/severity
agent/references
agent/weakness
agent/author
agent/description
agent/trending
agent/source
agent/tags
collector/nvd-api
agent/software-canonical-lookup-request
vendor/arm
canonical/arm cortex-a77 firmware
version/arm cortex-a77 firmware/r0p0
version/arm cortex-a77 firmware/r1p0
vendor/xen
canonical/xen xen-unstable

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