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Fencer Vulns
medium 4.7

CVE-2022-27672 json

When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thread after an SMT mode…

published 2023-02-14 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-32169

cvss
4.7
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits
0
none known

Summary

When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thread after an SMT mode switch potentially resulting in information disclosure.

Patch / fix

  • xen Debian 14, Debian 13, Debian 12 4.17.0+46-gaaf74a532c-1
  • linux Debian 14, Debian 13, Debian 12 6.1.12-1

debian advisories DEBIAN-CVE-2022-27672

  • linux Ubuntu 20.04 LTS 5.4.0-156.173
  • linux Ubuntu 22.04 LTS 5.15.0-72.79
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1107.115
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1036.40
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1110.119
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1034.42
  • linux-gke Ubuntu 20.04 LTS 5.4.0-1105.112
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1033.38

ubuntu advisories UBUNTU-CVE-2022-27672

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

  • kernel RHEL 9.2 EUS 5.14.0-284.40.1.el9_2
  • perf RHEL 9.2 EUS 5.14.0-284.40.1.el9_2
  • rtla RHEL 9.2 EUS 5.14.0-284.40.1.el9_2
  • bpftool RHEL 9.2 EUS 7.0.0-284.40.1.el9_2
  • kernel-64k RHEL 9.2 EUS 5.14.0-284.40.1.el9_2
  • kernel-core RHEL 9.2 EUS 5.14.0-284.40.1.el9_2
  • kernel-tools RHEL 9.2 EUS 5.14.0-284.40.1.el9_2
  • python3-perf RHEL 9.2 EUS 5.14.0-284.40.1.el9_2

red hat advisories RHSA-2023:7370RHSA-2023:7379

  • xen SLE Module for Server Applications 15 SP4, SLE Module for Basesystem 15 SP4, SLE Micro 5.3 +2 more 4.16.3_04-150400.4.22.1

suse advisories SUSE-SU-2023:0692-1

  • xen openSUSE Tumbleweed 4.17.0_04-3.1

opensuse advisories openSUSE-SU-2024:12715-1

  • xen Alpine 3.17, Alpine 3.16 4.16.4-r0
  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 4.17.0-r2

alpine advisories ALPINE-CVE-2022-27672

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-2022-27672 updated cvss 4.7

kernel: AMD: Cross-Thread Return Address Predictions

  • 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
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
    affected: workaround, no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.40.1.el9_2 Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.40.1.el9_2, rtla 5.14.0-284.40.1.el9_2, kernel-devel-matched 5.14.0-284.40.1.el9_2, kernel-64k-devel-matched 5.14.0-284.40.1.el9_2, kernel-debug-devel-matched 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.40.1.el9_2, +5 more Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.40.1.el9_2, kernel 5.14.0-284.40.1.el9_2, kernel-64k 5.14.0-284.40.1.el9_2, kernel-core 5.14.0-284.40.1.el9_2, kernel-tools 5.14.0-284.40.1.el9_2, python3-perf 5.14.0-284.40.1.el9_2, +28 more
    fixed: vendor fix RHSA-2023:7370
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-core 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-modules 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-debug-core 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-modules-core 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-debug-modules 5.14.0-284.40.1.rt14.325.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-kvm 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-core 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-modules 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-debug-kvm 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-debug-core 5.14.0-284.40.1.rt14.325.el9_2, +6 more
    fixed: vendor fix RHSA-2023:7379
  • Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.40.1.el9_2
    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

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

  • AMD 1st Gen AMD EPYC™ Processors
  • AMD 2nd Gen AMD EPYC™ Processors
  • AMD Athlon™ X4 Processor
  • AMD Ryzen™ Threadripper™ PRO Processor
  • AMD 2nd Gen AMD Ryzen™ Threadripper™ Processors
  • AMD 3rd Gen AMD Ryzen™ Threadripper™ Processors
  • AMD 7th Generation AMD A-Series APUs
  • AMD Ryzen™ 2000 Series Processors
  • AMD Ryzen™ 3000 Series Processors
  • AMD Ryzen™ 4000 Series Processors
  • AMD Ryzen™ 5000 Series Processors
  • AMD Athlon™ Mobile Processors

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.