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Fencer Vulns
medium 6.0

CVE-2023-5090 json

Kernel: kvm: svm: improper check in svm_set_x2apic_msr_interception allows direct access to host x2apic msrs

published 2023-11-06 3 y ago modified 2026-11-07 2 d ago also EUVD-2023-57430

cvss
6.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits
0
none known

Summary

A flaw was found in KVM. An improper check in svm_set_x2apic_msr_interception() may allow direct access to host x2apic msrs when the guest resets its apic, potentially leading to a denial of service condition.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 8 0:4.18.0-553.8.1.el8_10, 0:4.18.0-553.8.1.rt7.349.el8_10
  • Red Hat Red Hat Enterprise Linux 9 0:5.14.0-427.16.1.el9_4
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 0:5.14.0-284.69.1.el9_2, 0:5.14.0-284.69.1.rt14.354.el9_2
  • linux Debian 12 6.1.64-1
  • linux Debian 14, Debian 13 6.5.8-1

debian advisories DEBIAN-CVE-2023-5090

  • linux-aws-6.2 Ubuntu 22.04 LTS 6.2.0-1016.16~22.04.1
  • linux-gcp-6.2 Ubuntu 22.04 LTS 6.2.0-1019.21~22.04.1
  • linux-hwe-6.2 Ubuntu 22.04 LTS 6.2.0-37.38~22.04.1
  • linux-oem-6.1 Ubuntu 22.04 LTS 6.1.0-1026.26
  • linux-oem-6.5 Ubuntu 22.04 LTS 6.5.0-1008.8
  • linux-azure-6.2 Ubuntu 22.04 LTS 6.2.0-1017.17~22.04.1
  • linux-nvidia-6.2 Ubuntu 22.04 LTS 6.2.0-1012.12
  • linux-nvidia-6.5 Ubuntu 22.04 LTS 6.5.0-1007.7

ubuntu advisories UBUNTU-CVE-2023-5090

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 8 4.18.0-553.8.1.el8_10
  • perf RHEL 8 4.18.0-553.8.1.el8_10
  • bpftool RHEL 8 4.18.0-553.8.1.el8_10
  • kernel-core RHEL 8 4.18.0-553.8.1.el8_10
  • kernel-tools RHEL 8 4.18.0-553.8.1.el8_10
  • python3-perf RHEL 8 4.18.0-553.8.1.el8_10
  • kernel-modules RHEL 8 4.18.0-553.8.1.el8_10
  • kernel-zfcpdump RHEL 8 4.18.0-553.8.1.el8_10

red hat advisories RHSA-2024:4211RHSA-2024:4352RHSA-2024:3854RHSA-2024:3855RHSA-2024:2758

  • kernel-rt AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
  • kernel-rt-kvm AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
  • kernel-rt-core AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
  • kernel-rt-modules AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
  • kernel-rt-debug-kvm AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
  • kernel-rt-debug-core AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
  • kernel-rt-debug-modules AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
  • kernel-rt-modules-extra AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10

almalinux advisories ALSA-2024:4352ALSA-2024:4211ALSA-2024:2758

  • kernel-rt Rocky Linux 8 4.18.0-553.8.1.rt7.349.el8_10
  • kernel Rocky Linux 8 4.18.0-553.8.1.el8_10

rocky linux advisories RLSA-2024:4352RLSA-2024:4211

  • kernel CBL-Mariner 2.0 5.15.153.1-1

azure linux advisories AZL-31943

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2023-5090 updated cvss 6.0

kernel: KVM: SVM: improper check in svm_set_x2apic_msr_interception allows direct access to host x2apic msrs

  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: workaround, no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.69.1.el9_2
    fixed: vendor fix RHSA-2024:3855
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.16.1.el9_4, perf 5.14.0-427.16.1.el9_4, rtla 5.14.0-427.16.1.el9_4, kernel-devel-matched 5.14.0-427.16.1.el9_4, kernel-64k-devel-matched 5.14.0-427.16.1.el9_4, kernel-debug-devel-matched 5.14.0-427.16.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:2758
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.69.1.el9_2, rtla 5.14.0-284.69.1.el9_2, kernel-devel-matched 5.14.0-284.69.1.el9_2, kernel-64k-devel-matched 5.14.0-284.69.1.el9_2, kernel-debug-devel-matched 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.69.1.el9_2, +5 more
    fixed: vendor fix RHSA-2024:3855
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.8.1.el8_10, kernel 4.18.0-553.8.1.el8_10, bpftool 4.18.0-553.8.1.el8_10, kernel-core 4.18.0-553.8.1.el8_10, kernel-tools 4.18.0-553.8.1.el8_10, python3-perf 4.18.0-553.8.1.el8_10, +15 more
    fixed: vendor fix RHSA-2024:4211
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.16.1.el9_4, kernel 5.14.0-427.16.1.el9_4, kernel-64k 5.14.0-427.16.1.el9_4, kernel-core 5.14.0-427.16.1.el9_4, kernel-tools 5.14.0-427.16.1.el9_4, python3-perf 5.14.0-427.16.1.el9_4, +28 more
    fixed: vendor fix RHSA-2024:2758
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.69.1.el9_2, kernel 5.14.0-284.69.1.el9_2, kernel-64k 5.14.0-284.69.1.el9_2, kernel-core 5.14.0-284.69.1.el9_2, kernel-tools 5.14.0-284.69.1.el9_2, python3-perf 5.14.0-284.69.1.el9_2, +28 more
    fixed: vendor fix RHSA-2024:3855
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.8.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.8.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.8.1.el8_10
    fixed: vendor fix RHSA-2024:4211
show 7 more
  • Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.16.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.16.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.16.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.16.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.16.1.el9_4
    fixed: vendor fix RHSA-2024:2758
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-kvm 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-kvm 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-core 4.18.0-553.8.1.rt7.349.el8_10, +4 more
    fixed: vendor fix RHSA-2024:4352
  • Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.16.1.el9_4, kernel-rt-kvm 5.14.0-427.16.1.el9_4, kernel-rt-core 5.14.0-427.16.1.el9_4, kernel-rt-modules 5.14.0-427.16.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.16.1.el9_4, kernel-rt-debug-core 5.14.0-427.16.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:2758
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-modules 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-modules-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-modules 5.14.0-284.69.1.rt14.354.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-kvm 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-modules 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-kvm 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-core 5.14.0-284.69.1.rt14.354.el9_2, +6 more
    fixed: vendor fix RHSA-2024:3854
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules-extra 4.18.0-553.8.1.rt7.349.el8_10, +2 more
    fixed: vendor fix RHSA-2024:4352
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.16.1.el9_4, kernel-rt-core 5.14.0-427.16.1.el9_4, kernel-rt-modules 5.14.0-427.16.1.el9_4, kernel-rt-debug-core 5.14.0-427.16.1.el9_4, kernel-rt-modules-core 5.14.0-427.16.1.el9_4, kernel-rt-debug-modules 5.14.0-427.16.1.el9_4, +4 more
    fixed: vendor fix RHSA-2024:2758
  • 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 Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.69.1.el9_2 Red Hat Enterprise Linux BaseOS (v. 8) kernel-headers 4.18.0-553.8.1.el8_10, kernel-cross-headers 4.18.0-553.8.1.el8_10
    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

0.25% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7

Classification

Weakness
  • CWE-755 Improper Handling of Exceptional Conditions
Technology feeds

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.