Certain Arm Cortex and Neoverse processors through 2022-03-08 do not properly restrict cache speculation, aka Spectre-BHB. An attacker can leverage the shared branch history in the Branch History Buffer (BHB) to influence mispredicted branches. Then, cache allocation can allow the attacker to obtain sensitive information.
Fix
Patch, vendor advisory and mitigation references on NVD 6
- http://www.openwall.com/lists/oss-security/2022/03/18/2 Mailing List, Patch, Third Party Advisory
- https://developer.arm.com/support/arm-security-updates Vendor Advisory
- https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability Mitigation, Patch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2022/03/18/2 Mailing List, Patch, Third Party Advisory
- https://developer.arm.com/support/arm-security-updates Vendor Advisory
- https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability Mitigation, Patch, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.6 · xen, arm, debianNVD modified 2026-10-08 22:17
Affected (CPE criteria) 23
cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-r7_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-r8_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a57_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a65_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a65ae_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a710_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a72_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a73_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a75_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a76_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a76ae_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a77_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a78_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-a78ae_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-x1_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:cortex-x2_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:neoverse-e1_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:neoverse-v1_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:neoverse_n1_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:arm:neoverse_n2_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
References 10
- http://www.openwall.com/lists/oss-security/2022/03/18/2 Mailing List, Patch, Third Party Advisory
- https://developer.arm.com/support/arm-security-updates Vendor Advisory
- https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability Mitigation, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html Mailing List, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5173 Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/03/18/2 Mailing List, Patch, Third Party Advisory
- https://developer.arm.com/support/arm-security-updates Vendor Advisory
- https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability Mitigation, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html Mailing List, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5173 Third Party Advisory