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Fencer Vulns
medium 5.6

CVE-2022-23960 json

Certain Arm Cortex and Neoverse processors through 2022-03-08 do not properly restrict cache speculation, aka Spectre-BHB.

published 2022-03-12 4 y ago modified 2026-10-08 31 d ago also EUVD-2022-28876

cvss
5.6
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

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.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 5.16.14-1
  • arm-trusted-firmware Debian 14 2.12.16+dfsg-1

debian advisories DEBIAN-CVE-2022-23960

  • linux Ubuntu 18.04 LTS 4.15.0-184.194
  • linux Ubuntu 20.04 LTS 5.4.0-117.132
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1133.143
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1078.84
  • linux-ibm Ubuntu 20.04 LTS 5.4.0-1026.29
  • linux-iot Ubuntu 20.04 LTS 5.4.0-1004.6
  • linux-kvm Ubuntu 18.04 LTS 4.15.0-1119.123
  • linux-kvm Ubuntu 20.04 LTS 5.4.0-1068.72

ubuntu advisories UBUNTU-CVE-2022-23960

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • perf rhev hypervisor 4.4, RHEL 8.6 EUS 4.18.0-372.93.1.el8_6
  • kernel RHEL 8 4.18.0-425.3.1.el8
  • perf RHEL 8 4.18.0-425.3.1.el8
  • bpftool RHEL 8 4.18.0-425.3.1.el8
  • kernel-core RHEL 8 4.18.0-425.3.1.el8
  • kernel-tools RHEL 8 4.18.0-425.3.1.el8
  • python3-perf RHEL 8 4.18.0-425.3.1.el8
  • kernel-modules RHEL 8 4.18.0-425.3.1.el8

red hat advisories RHSA-2024:0930RHSA-2022:7683

  • kernel-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.97.1
  • kernel-syms-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.97.1
  • kernel-source-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.97.1
  • kernel-syms SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.116.1
  • kernel-source SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.116.1
  • kernel-default SLES for SAP 12 SP5, SLES 12 SP5, SLE Workstation Extension 12 SP5 +2 more 4.12.14-122.116.1
  • kernel-obs-build SLE Software Development Kit 12 SP5 4.12.14-122.116.1
  • kgraft-patch-SLE12-SP5_Update_30 SLE Live Patching 12 SP5 1-8.3.1

suse advisories SUSE-SU-2022:1651-1SUSE-SU-2022:1196-1

  • kernel AlmaLinux 8 4.18.0-425.3.1.el8
  • perf AlmaLinux 8 4.18.0-425.3.1.el8
  • bpftool AlmaLinux 8 4.18.0-425.3.1.el8
  • kernel-core AlmaLinux 8 4.18.0-425.3.1.el8
  • kernel-tools AlmaLinux 8 4.18.0-425.3.1.el8
  • python3-perf AlmaLinux 8 4.18.0-425.3.1.el8
  • kernel-modules AlmaLinux 8 4.18.0-425.3.1.el8
  • kernel-zfcpdump AlmaLinux 8 4.18.0-425.3.1.el8

almalinux advisories ALSA-2022:7683

  • kernel Rocky Linux 8 4.18.0-425.3.1.el8

rocky linux advisories RLSA-2022:7683

  • xen Alpine 3.12 4.13.4-r3

alpine advisories ALPINE-CVE-2022-23960

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-23960 updated cvss 4.7

hw: cpu: arm64: Spectre-BHB

  • Red Hat Enterprise Linux 8 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +6 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +82 more
    affected: workaround, no fix available
  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-425.3.1.el8, kernel-debuginfo-common-aarch64 4.18.0-425.3.1.el8, kernel-debuginfo-common-ppc64le 4.18.0-425.3.1.el8
    fixed: vendor fix RHSA-2022:7683
  • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.93.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.93.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.93.1.el8_6
    fixed: vendor fix RHSA-2024:0930
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-425.3.1.el8, kernel 4.18.0-425.3.1.el8, bpftool 4.18.0-425.3.1.el8, kernel-core 4.18.0-425.3.1.el8, kernel-tools 4.18.0-425.3.1.el8, python3-perf 4.18.0-425.3.1.el8, +15 more
    fixed: vendor fix RHSA-2022:7683
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.93.1.el8_6, kernel 4.18.0-372.93.1.el8_6, bpftool 4.18.0-372.93.1.el8_6, kernel-core 4.18.0-372.93.1.el8_6, kernel-tools 4.18.0-372.93.1.el8_6, python3-perf 4.18.0-372.93.1.el8_6, +15 more Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.93.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.93.1.el8_6
    fixed: vendor fix RHSA-2024:0930
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
31 d ago

Exploit prediction

0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD 2.0 1.9 AV:L/AC:M/Au:N/C:P/I:N/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.