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CVE-2023-34320

arm: Guests can trigger a deadlock on Cortex-A77

Medium5.5EPSS 0.24%
Published
Updated
Reserved
Assigned by
XEN

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.

Scores

CVSS scores of CVE-2023-34320, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.24% · top 85% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Weakness

Affected products

  • Xen · Xen

    • unknown consult Xen advisory XSA-436

What to do

Workaround: There are no known mitigations.

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated .