Skip to content
Fencer Vulns
high 7.5

CVE-2024-21823 json

Hardware logic with insecure de-synchronization in Intel(R) DSA and Intel(R) IAA for some Intel(R) 4th or 5th generation Xeon(R) processors…

published 2024-05-16 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-19435

cvss
7.5
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 9%
public exploits
0
none known

Summary

Hardware logic with insecure de-synchronization in Intel(R) DSA and Intel(R) IAA for some Intel(R) 4th or 5th generation Xeon(R) processors may allow an authorized user to potentially enable escalation of privilege local access

Patch / fix

  • linux Debian 12 6.1.94-1
  • linux Debian 14, Debian 13 6.8.11-1

debian advisories DEBIAN-CVE-2024-21823

  • linux Ubuntu 22.04 LTS 5.15.0-112.122
  • linux Ubuntu 24.04 LTS 6.8.0-35.35
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1064.70
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1010.10
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1062.70
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1009.10
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1061.67
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1005.8

ubuntu advisories UBUNTU-CVE-2024-21823

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-rt RHEL 8 4.18.0-553.16.1.rt7.357.el8_10
  • kernel-rt-kvm RHEL 8 4.18.0-553.16.1.rt7.357.el8_10
  • kernel-rt-core RHEL 8 4.18.0-553.16.1.rt7.357.el8_10
  • kernel-rt-modules RHEL 8 4.18.0-553.16.1.rt7.357.el8_10
  • kernel-rt-debug-kvm RHEL 8 4.18.0-553.16.1.rt7.357.el8_10
  • kernel-rt-debug-core RHEL 8 4.18.0-553.16.1.rt7.357.el8_10
  • kernel-rt-debug-modules RHEL 8 4.18.0-553.16.1.rt7.357.el8_10
  • kernel-rt-modules-extra RHEL 8 4.18.0-553.16.1.rt7.357.el8_10

red hat advisories RHSA-2024:5102RHSA-2024:5101RHSA-2024:6206RHSA-2024:5363RHSA-2024:5364RHSA-2024:5365

  • kernel-rt Linux Micro 6.0 6.4.0-9.1
  • kernel-source-rt Linux Micro 6.0 6.4.0-9.1
  • kernel-source Linux Micro 6.0 6.4.0-18.1
  • kernel-default Linux Micro 6.0 6.4.0-18.1
  • kernel-kvmsmall Linux Micro 6.0 6.4.0-18.1
  • kernel-default-base Linux Micro 6.0 6.4.0-17.1.1.51
  • kernel-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.5.1
  • kernel-syms-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.5.1

suse advisories SUSE-SU-2025:20028-1SUSE-SU-2025:20008-1SUSE-SU-2024:2973-1SUSE-SU-2024:2203-1SUSE-SU-2024:2135-1

  • kernel AlmaLinux 9 5.14.0-427.31.1.el9_4
  • rv AlmaLinux 9 5.14.0-427.31.1.el9_4
  • perf AlmaLinux 9 5.14.0-427.31.1.el9_4
  • rtla AlmaLinux 9 5.14.0-427.31.1.el9_4
  • bpftool AlmaLinux 9 7.3.0-427.31.1.el9_4
  • libperf AlmaLinux 9 5.14.0-427.31.1.el9_4
  • kernel-rt AlmaLinux 9 5.14.0-427.31.1.el9_4
  • kernel-64k AlmaLinux 9 5.14.0-427.31.1.el9_4

almalinux advisories ALSA-2024:5363ALSA-2024:5101ALSA-2024:5102

  • kernel Rocky Linux 8 4.18.0-553.16.1.el8_10.cloud.0.1
  • kernel Rocky Linux 9 5.14.0-427.31.1.el9_4
  • kernel-rt Rocky Linux 8 4.18.0-553.16.1.rt7.357.el8_10
  • kernel Rocky Linux 8 4.18.0-553.16.1.el8_10

rocky linux advisories RXSA-2024:5101RLSA-2024:5363RLSA-2024:5102RLSA-2024:5101

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-2024-21823 updated cvss 6.4

kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by untrusted application

  • 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: no fix available
  • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-debuginfo-common-x86_64 4.18.0-477.70.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.70.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.70.1.el8_8
    fixed: vendor fix RHSA-2024:6206
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.79.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.79.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.79.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.79.1.el9_2
    fixed: vendor fix RHSA-2024:5364
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.31.1.el9_4, perf 5.14.0-427.31.1.el9_4, rtla 5.14.0-427.31.1.el9_4, kernel-devel-matched 5.14.0-427.31.1.el9_4, kernel-64k-devel-matched 5.14.0-427.31.1.el9_4, kernel-debug-devel-matched 5.14.0-427.31.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:5363
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.112.1.el9_0, kernel-devel-matched 5.14.0-70.112.1.el9_0, kernel-debug-devel-matched 5.14.0-70.112.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.112.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.112.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.112.1.el9_0, +2 more
    fixed: vendor fix RHSA-2024:5257
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.79.1.el9_2, rtla 5.14.0-284.79.1.el9_2, kernel-devel-matched 5.14.0-284.79.1.el9_2, kernel-64k-devel-matched 5.14.0-284.79.1.el9_2, kernel-debug-devel-matched 5.14.0-284.79.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.79.1.el9_2, +5 more
    fixed: vendor fix RHSA-2024:5364
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.16.1.el8_10, kernel 4.18.0-553.16.1.el8_10, bpftool 4.18.0-553.16.1.el8_10, kernel-core 4.18.0-553.16.1.el8_10, kernel-tools 4.18.0-553.16.1.el8_10, python3-perf 4.18.0-553.16.1.el8_10, +15 more
    fixed: vendor fix RHSA-2024:5101
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.31.1.el9_4, kernel 5.14.0-427.31.1.el9_4, kernel-64k 5.14.0-427.31.1.el9_4, kernel-core 5.14.0-427.31.1.el9_4, kernel-tools 5.14.0-427.31.1.el9_4, python3-perf 5.14.0-427.31.1.el9_4, +28 more
    fixed: vendor fix RHSA-2024:5363
show 21 more
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.134.1.el8_4, kernel 4.18.0-305.134.1.el8_4, bpftool 4.18.0-305.134.1.el8_4, kernel-core 4.18.0-305.134.1.el8_4, kernel-tools 4.18.0-305.134.1.el8_4, python3-perf 4.18.0-305.134.1.el8_4, +8 more
    fixed: vendor fix RHSA-2024:4731
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.118.1.el8_6, kernel 4.18.0-372.118.1.el8_6, bpftool 4.18.0-372.118.1.el8_6, kernel-core 4.18.0-372.118.1.el8_6, kernel-tools 4.18.0-372.118.1.el8_6, python3-perf 4.18.0-372.118.1.el8_6, +8 more
    fixed: vendor fix RHSA-2024:5281
  • Red Hat Enterprise Linux BaseOS E4S (v.8.4) perf 4.18.0-305.134.1.el8_4, kernel 4.18.0-305.134.1.el8_4, bpftool 4.18.0-305.134.1.el8_4, kernel-core 4.18.0-305.134.1.el8_4, kernel-tools 4.18.0-305.134.1.el8_4, python3-perf 4.18.0-305.134.1.el8_4, +9 more
    fixed: vendor fix RHSA-2024:4731
  • Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.118.1.el8_6, kernel 4.18.0-372.118.1.el8_6, bpftool 4.18.0-372.118.1.el8_6, kernel-core 4.18.0-372.118.1.el8_6, kernel-tools 4.18.0-372.118.1.el8_6, python3-perf 4.18.0-372.118.1.el8_6, +15 more
    fixed: vendor fix RHSA-2024:5281
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.112.1.el9_0, bpftool 5.14.0-70.112.1.el9_0, kernel-core 5.14.0-70.112.1.el9_0, kernel-tools 5.14.0-70.112.1.el9_0, python3-perf 5.14.0-70.112.1.el9_0, kernel-modules 5.14.0-70.112.1.el9_0, +14 more
    fixed: vendor fix RHSA-2024:5257
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) perf 4.18.0-477.70.1.el8_8, kernel 4.18.0-477.70.1.el8_8, bpftool 4.18.0-477.70.1.el8_8, kernel-core 4.18.0-477.70.1.el8_8, kernel-tools 4.18.0-477.70.1.el8_8, python3-perf 4.18.0-477.70.1.el8_8, +15 more
    fixed: vendor fix RHSA-2024:6206
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.79.1.el9_2, kernel 5.14.0-284.79.1.el9_2, kernel-64k 5.14.0-284.79.1.el9_2, kernel-core 5.14.0-284.79.1.el9_2, kernel-tools 5.14.0-284.79.1.el9_2, python3-perf 5.14.0-284.79.1.el9_2, +28 more
    fixed: vendor fix RHSA-2024:5364
  • Red Hat Enterprise Linux BaseOS TUS (v.8.4) perf 4.18.0-305.134.1.el8_4, kernel 4.18.0-305.134.1.el8_4, bpftool 4.18.0-305.134.1.el8_4, kernel-core 4.18.0-305.134.1.el8_4, kernel-tools 4.18.0-305.134.1.el8_4, python3-perf 4.18.0-305.134.1.el8_4, +8 more
    fixed: vendor fix RHSA-2024:4731
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.118.1.el8_6, kernel 4.18.0-372.118.1.el8_6, bpftool 4.18.0-372.118.1.el8_6, kernel-core 4.18.0-372.118.1.el8_6, kernel-tools 4.18.0-372.118.1.el8_6, python3-perf 4.18.0-372.118.1.el8_6, +8 more
    fixed: vendor fix RHSA-2024:5281
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.16.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.16.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.16.1.el8_10
    fixed: vendor fix RHSA-2024:5101
  • Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.31.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.31.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.31.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.31.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.31.1.el9_4
    fixed: vendor fix RHSA-2024:5363
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-kvm 4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-core 4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-modules 4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-debug-kvm 4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-debug-core 4.18.0-553.16.1.rt7.357.el8_10, +4 more
    fixed: vendor fix RHSA-2024:5102
  • Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.31.1.el9_4, kernel-rt-kvm 5.14.0-427.31.1.el9_4, kernel-rt-core 5.14.0-427.31.1.el9_4, kernel-rt-modules 5.14.0-427.31.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.31.1.el9_4, kernel-rt-debug-core 5.14.0-427.31.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:5363
  • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-kvm 5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-core 5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-modules 5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-debug-kvm 5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-debug-core 5.14.0-70.112.1.rt21.184.el9_0, +4 more
    fixed: vendor fix RHSA-2024:5256
  • Red Hat Enterprise Linux NFV TUS (v.8.4) kernel-rt 4.18.0-305.134.1.rt7.210.el8_4, kernel-rt-kvm 4.18.0-305.134.1.rt7.210.el8_4, kernel-rt-core 4.18.0-305.134.1.rt7.210.el8_4, kernel-rt-modules 4.18.0-305.134.1.rt7.210.el8_4, kernel-rt-debug-kvm 4.18.0-305.134.1.rt7.210.el8_4, kernel-rt-debug-core 4.18.0-305.134.1.rt7.210.el8_4, +4 more
    fixed: vendor fix RHSA-2024:4729
  • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-core 5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-modules 5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-debug-core 5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-debug-modules 5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-modules-extra 5.14.0-70.112.1.rt21.184.el9_0, +2 more
    fixed: vendor fix RHSA-2024:5256
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.79.1.rt14.364.el9_2, kernel-rt-core 5.14.0-284.79.1.rt14.364.el9_2, kernel-rt-modules 5.14.0-284.79.1.rt14.364.el9_2, kernel-rt-debug-core 5.14.0-284.79.1.rt14.364.el9_2, kernel-rt-modules-core 5.14.0-284.79.1.rt14.364.el9_2, kernel-rt-debug-modules 5.14.0-284.79.1.rt14.364.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.79.1.rt14.364.el9_2, kernel-rt-kvm 5.14.0-284.79.1.rt14.364.el9_2, kernel-rt-core 5.14.0-284.79.1.rt14.364.el9_2, kernel-rt-modules 5.14.0-284.79.1.rt14.364.el9_2, kernel-rt-debug-kvm 5.14.0-284.79.1.rt14.364.el9_2, kernel-rt-debug-core 5.14.0-284.79.1.rt14.364.el9_2, +6 more
    fixed: vendor fix RHSA-2024:5365
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-core 4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-modules 4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-debug-core 4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-debug-modules 4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-modules-extra 4.18.0-553.16.1.rt7.357.el8_10, +2 more
    fixed: vendor fix RHSA-2024:5102
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.31.1.el9_4, kernel-rt-core 5.14.0-427.31.1.el9_4, kernel-rt-modules 5.14.0-427.31.1.el9_4, kernel-rt-debug-core 5.14.0-427.31.1.el9_4, kernel-rt-modules-core 5.14.0-427.31.1.el9_4, kernel-rt-debug-modules 5.14.0-427.31.1.el9_4, +4 more
    fixed: vendor fix RHSA-2024:5363
  • Red Hat Enterprise Linux RT TUS (v.8.4) kernel-rt 4.18.0-305.134.1.rt7.210.el8_4, kernel-rt-core 4.18.0-305.134.1.rt7.210.el8_4, kernel-rt-modules 4.18.0-305.134.1.rt7.210.el8_4, kernel-rt-debug-core 4.18.0-305.134.1.rt7.210.el8_4, kernel-rt-debug-modules 4.18.0-305.134.1.rt7.210.el8_4, kernel-rt-modules-extra 4.18.0-305.134.1.rt7.210.el8_4, +2 more
    fixed: vendor fix RHSA-2024:4729
  • 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 10 kernel Red Hat Enterprise Linux AppStream (v. 9) kernel-headers 5.14.0-427.31.1.el9_4 Red Hat Enterprise Linux BaseOS AUS (v.8.6) kernel-headers 4.18.0-372.118.1.el8_6, kernel-cross-headers 4.18.0-372.118.1.el8_6 Red Hat Enterprise Linux BaseOS E4S (v.8.6) kernel-headers 4.18.0-372.118.1.el8_6, kernel-cross-headers 4.18.0-372.118.1.el8_6
    +2 more products
    Red Hat Enterprise Linux BaseOS TUS (v.8.6) kernel-headers 4.18.0-372.118.1.el8_6, kernel-cross-headers 4.18.0-372.118.1.el8_6 Red Hat Enterprise Linux CRB (v. 9) kernel-cross-headers 5.14.0-427.31.1.el9_4
    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

0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H

Affected products

  • n/a Intel(R) DSA and Intel(R) IAA for some Intel(R) 4th or 5th generation Xeon(R) processors

Classification

Weakness
  • CWE-1264 Hardware Logic with Insecure De-Synchronization between Control and Data Channels
  • CWE-400 Uncontrolled Resource Consumption

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.