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Fencer Vulns
medium 4.7

CVE-2023-46103 json

Sequence of processor instructions leads to unexpected behavior in Intel(R) Core(TM) Ultra Processors may allow an authenticated user to po…

published 2024-05-16 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-50364

cvss
4.7
version 3.1, CNA
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

Sequence of processor instructions leads to unexpected behavior in Intel(R) Core(TM) Ultra Processors may allow an authenticated user to potentially enable denial of service via local access.

Patch / fix

  • intel-microcode Debian 12 3.20240514.1~deb12u1
  • intel-microcode Debian 14, Debian 13 3.20240514.1

debian advisories DEBIAN-CVE-2023-46103

  • intel-microcode Ubuntu 20.04 LTS 3.20240514.0ubuntu0.20.04.1
  • intel-microcode Ubuntu 22.04 LTS 3.20240514.0ubuntu0.22.04.1
  • intel-microcode Ubuntu 24.04 LTS 3.20240514.0ubuntu0.24.04.1
  • intel-microcode Ubuntu Pro 16.04 LTS 3.20240514.0ubuntu0.16.04.1+esm1
  • intel-microcode Ubuntu Pro 18.04 LTS 3.20240514.0ubuntu0.18.04.1+esm1

ubuntu advisories UBUNTU-CVE-2023-46103

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

  • microcode_ctl RHEL 9 4:20230808-2.20240531.1.el9_4
  • microcode_ctl RHEL 9 4:20240910-1.el9_5

red hat advisories RHEA-2024:7620RHSA-2024:9401

  • ucode-intel Linux Micro 6.0 20240813-1.1
  • ucode-intel SLES for SAP 15 SP4, SLES for SAP 15 SP3, SLES for SAP 15 SP2 +21 more 20240514-150200.41.1
  • ucode-intel SLES for SAP 12 SP5, SLES 12 SP5 20240514-137.1
  • microcode_ctl SLES 11 SP4 LTSS EXTREME CORE 1.17-102.83.81.1

suse advisories SUSE-SU-2025:1032-1SUSE-SU-2025:20020-1SUSE-SU-2024:1771-1SUSE-SU-2024:1684-1

  • ucode-intel openSUSE Tumbleweed 20240514-1.1

opensuse advisories openSUSE-SU-2024:13974-1

  • microcode_ctl AlmaLinux 9 4:20240910-1.el9_5

almalinux advisories ALSA-2024:9401

  • microcode_ctl Rocky Linux 9 4:20240910-1.el9_5

rocky linux advisories RLSA-2024:9401

  • intel-ucode Alpine 3.18, Alpine 3.17 20240813-r0
  • intel-ucode Alpine 3.24, Alpine 3.23, Alpine 3.22 +3 more 20240514-r0

alpine advisories ALPINE-CVE-2023-46103

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-2023-46103 updated cvss 4.7

intel-microcode: Unexpected behavior in Intel(R) Core(TM) Ultra Processors

  • Red Hat Enterprise Linux 6 microcode_ctl Red Hat Enterprise Linux 7 microcode_ctl
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 microcode_ctl
    affected: workaround, no fix available
  • Red Hat Enterprise Linux BaseOS (v. 9) microcode_ctl 20240910-1.el9_5, microcode_ctl 20230808-2.20240531.1.el9_4
    fixed: vendor fix RHEA-2024:7620
  • Red Hat Enterprise Linux 10 microcode_ctl
    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
2 y ago

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
CNA 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • n/a Intel(R) Core(TM) Ultra Processors

Classification

Weakness
  • CWE-1281 Sequence of Processor Instructions Leads to Unexpected Behavior

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.