medium
4.7
Advisory Published
Updated

CVE-2022-25368

First published: Wed Mar 09 2022(Updated: )

Spectre BHB is a variant of Spectre-v2 in which malicious code uses the shared branch history (stored in the CPU BHB) to influence mispredicted branches in the victim's hardware context. Speculation caused by these mispredicted branches can then potentially be used to cause cache allocation, which can then be used to infer information that should be protected.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Amperecomputing Ampere Altra Max Firmware
Amperecomputing Ampere Altra Max
Amperecomputing Ampere Altra Firmware
Amperecomputing Ampere Altra
Arm Neoverse-e1 Firmware
Arm Neoverse-e1
Arm Neoverse-v1 Firmware
Arm Neoverse-v1
Arm Cortex-a57 Firmware
Arm Cortex-a57
Arm Cortex-a65 Firmware
Arm Cortex-a65
Arm Cortex-a65ae Firmware
Arm Cortex-a65ae
Arm Cortex-a72 Firmware
Arm Cortex-a72
Arm Cortex-a73 Firmware
Arm Cortex-a73
Arm Cortex-a75 Firmware
Arm Cortex-a75
Arm Cortex-a76 Firmware
Arm Cortex-a76
Arm Cortex-a76ae Firmware
Arm Cortex-a76ae
Arm Cortex-a77 Firmware
Arm Cortex-a77
Arm Cortex-a78 Firmware
Arm Cortex-a78
Arm Cortex-a78ae Firmware
Arm Cortex-a78ae
Arm Cortex-a78c Firmware
Arm Cortex-a78c
Arm Cortex-x1 Firmware
Arm Cortex-x1
Arm Cortex-x2 Firmware
Arm Cortex-x2
Arm Cortex-a710 Firmware
Arm Cortex-a710
Arm Cortex-a15 Firmware
Arm Cortex-a15
Arm Neoverse N1 Firmware
Arm Neoverse N1
Arm Neoverse N2 Firmware
Arm Neoverse N2

Remedy

https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/spectre-bhb

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Reference Links

Frequently Asked Questions

  • What is CVE-2022-25368?

    CVE-2022-25368 is a variant of Spectre-v2 called Spectre BHB, which allows malicious code to use shared branch history to influence mispredicted branches in the victim's hardware context.

  • How does CVE-2022-25368 work?

    CVE-2022-25368 utilizes the shared branch history (stored in the CPU BHB) to cause cache allocation and potentially exploit speculation in the victim's hardware.

  • Which software is affected by CVE-2022-25368?

    The Ampere Altra Max Firmware and Google Android (Neoverse-e1, Cortex-a65, Cortex-a65ae, Cortex-a72, Cortex-a73, Cortex-a75, Cortex-a76, Cortex-a76ae, Cortex-a77, Cortex-a78, Cortex-a78ae, Cortex-a78c, Cortex-x1) are affected by CVE-2022-25368.

  • What is the severity of CVE-2022-25368?

    CVE-2022-25368 has a severity score of 4.7, which is considered medium.

  • Are Ampere Altra Max and Arm Neoverse-e1 vulnerable to CVE-2022-25368?

    No, Ampere Altra Max and Arm Neoverse-e1 are not vulnerable to CVE-2022-25368.

Company

Resources

Contact

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