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Fencer Vulns
medium 5.5

CVE-2022-23824 json

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

published 2022-11-09 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-28753

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

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

Patch / fix

  • xen Debian 14, Debian 13, Debian 12 4.16.2+90-g0d39a6d1ae-1

debian advisories DEBIAN-CVE-2022-23824

  • xen SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 4.12.4_32-3.85.4
  • xen SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS +1 more 4.13.4_18-150200.3.68.1
  • xen SLES 12 SP2-BCL 4.7.6_30-43.101.1
  • xen SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Real Time 15 SP3 +9 more 4.14.5_10-150300.3.45.1
  • xen SLE Module for Server Applications 15 SP4, SLE Module for Basesystem 15 SP4, SLE Micro 5.3 +2 more 4.16.3_02-150400.4.19.1
  • xen SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS +1 more 4.12.4_32-150100.3.83.1
  • xen SLES for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 4.11.4_36-2.86.1

suse advisories SUSE-SU-2023:0672-1SUSE-SU-2023:0214-1SUSE-SU-2023:0186-1SUSE-SU-2023:0170-1SUSE-SU-2023:0169-1SUSE-SU-2023:0154-1

  • xen Alpine 3.13 4.14.5-r7
  • xen Alpine 3.15, Alpine 3.14 4.15.4-r0
  • xen Alpine 3.16 4.16.2-r0
  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +5 more 4.16.2-r2

alpine advisories ALPINE-CVE-2022-23824

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-2022-23824 updated cvss 5.6

hw: cpu: AMD: IBPB and Return Address Predictor Interactions

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 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

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

  • AMD AMD 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.