CVE-2022-23824 Information disclosure in AMD Processors

Medium 5.5 Published Updated

Attackers can potentially disclose sensitive information via return branch predictions bypassing IBPB mitigations on AMD processors.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2022-23824?

CVE-2022-23824 is a medium-severity vulnerability in Amd Epyc 7252 Firmware, published on 9 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information disclosure.

Which versions are affected by CVE-2022-23824?

It affects 169 products.

Linux distribution packages (33)
xen SUSE:Enterprise Storage 6All versions4.12.4_32-150100.3.83.1
xen SUSE:Enterprise Storage 7All versions4.13.4_18-150200.3.68.1
xen SUSE:Enterprise Storage 7.1All versions4.14.5_10-150300.3.45.1
xen SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSSAll versions4.12.4_32-150100.3.83.1
xen SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSSAll versions4.13.4_18-150200.3.68.1
xen SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOSAll versions4.14.5_10-150300.3.45.1
xen SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSAll versions4.14.5_10-150300.3.45.1
xen SUSE:Linux Enterprise Micro 5.1All versions4.14.5_10-150300.3.45.1
xen SUSE:Linux Enterprise Micro 5.2All versions4.14.5_10-150300.3.45.1
xen SUSE:Linux Enterprise Micro 5.3All versions4.16.3_02-150400.4.19.1
xen SUSE:Linux Enterprise Module for Basesystem 15 SP4All versions4.16.3_02-150400.4.19.1
xen SUSE:Linux Enterprise Module for Server Applications 15 SP4All versions4.16.3_02-150400.4.19.1
xen SUSE:Linux Enterprise Real Time 15 SP3All versions4.14.5_10-150300.3.45.1
xen SUSE:Linux Enterprise Server 12 SP2-BCLAll versions4.7.6_30-43.101.1
xen SUSE:Linux Enterprise Server 12 SP4-LTSSAll versions4.11.4_36-2.86.1
xen SUSE:Linux Enterprise Server 12 SP5All versions4.12.4_32-3.85.4
xen SUSE:Linux Enterprise Server 15 SP1-LTSSAll versions4.12.4_32-150100.3.83.1
xen SUSE:Linux Enterprise Server 15 SP2-LTSSAll versions4.13.4_18-150200.3.68.1
xen SUSE:Linux Enterprise Server 15 SP3-LTSSAll versions4.14.5_10-150300.3.45.1
xen SUSE:Linux Enterprise Server for SAP Applications 12 SP4All versions4.11.4_36-2.86.1
xen SUSE:Linux Enterprise Server for SAP Applications 12 SP5All versions4.12.4_32-3.85.4
xen SUSE:Linux Enterprise Server for SAP Applications 15 SP1All versions4.12.4_32-150100.3.83.1
xen SUSE:Linux Enterprise Server for SAP Applications 15 SP2All versions4.13.4_18-150200.3.68.1
xen SUSE:Linux Enterprise Server for SAP Applications 15 SP3All versions4.14.5_10-150300.3.45.1
xen SUSE:Linux Enterprise Software Development Kit 12 SP5All versions4.12.4_32-3.85.4
xen SUSE:Manager Proxy 4.2All versions4.14.5_10-150300.3.45.1
xen SUSE:Manager Retail Branch Server 4.2All versions4.14.5_10-150300.3.45.1
xen SUSE:Manager Server 4.2All versions4.14.5_10-150300.3.45.1
xen SUSE:OpenStack Cloud 9All versions4.11.4_36-2.86.1
xen SUSE:OpenStack Cloud Crowbar 9All versions4.11.4_36-2.86.1
xen openSUSE:Leap 15.4All versions4.16.3_02-150400.4.19.1
xen openSUSE:Leap Micro 5.2All versions4.14.5_10-150300.3.45.1
xen openSUSE:Leap Micro 5.3All versions4.16.3_02-150400.4.19.1

Products include Amd A10-9600p Firmware, Amd A10-9630p Firmware, Amd A12-9700p Firmware, Amd A12-9730p Firmware, Amd A4-9120 Firmware, Amd A6-9210 Firmware and 163 more.

How do I fix CVE-2022-23824?

Apply the vendor's patch.

Is CVE-2022-23824 being exploited?

There is no known exploitation of CVE-2022-23824 in the wild and no public exploit code.

All Amd Epyc 7252 Firmware vulnerabilities

Sources

Also known as ALPINE-CVE-2022-23824, DEBIAN-CVE-2022-23824, GHSA-hhhj-6x4j-w995, SUSE-SU-2023:0136-1, SUSE-SU-2023:0154-1, SUSE-SU-2023:0169-1 and 5 more.

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