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TI-2022-05567 Aliases CVE-2022-21166

Incomplete cleanup in specific special register write operations for some Intel(R)…

Priority LOW 34CWE-459Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 34 fixed, 3 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, Red Hat and Microsoft.

Summary

Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.06451 93rd percentileScored 2026-11-07
Fix Partial Red Hat: 13 advisoriesMicrosoft: 1 updateRed Hat: 34 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Intel(R) ProcessorsSee references—No fix listedCNA
  • Intel(R) Processors Vendor— Affected See references Fixed in — No fix listed CNA

CPE configurations NVD · 25

CPEVersionsRoleVendor
cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*all versionsVulnerableXen
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*35VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*36VulnerableFedoraproject
cpe:2.3:a:intel:sgx_dcap:*:*:*:*:*:linux:*:*before 1.14.100.3VulnerableIntel
cpe:2.3:a:intel:sgx_dcap:*:*:*:*:*:windows:*:*before 1.14.100.3VulnerableIntel
cpe:2.3:a:intel:sgx_psw:*:*:*:*:*:windows:*:*before 2.16.100.3VulnerableIntel
cpe:2.3:a:intel:sgx_psw:*:*:*:*:*:linux:*:*before 2.17.100.3VulnerableIntel
cpe:2.3:a:intel:sgx_sdk:*:*:*:*:*:windows:*:*before 2.16.100.3VulnerableIntel
cpe:2.3:a:intel:sgx_sdk:*:*:*:*:*:linux:*:*before 2.17.100.3VulnerableIntel
cpe:2.3:o:vmware:esxi:7.0:-:*:*:*:*:*:*7.0VulnerableVMware
  • cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* Versions all versions Vulnerable ·Xen
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* Versions 36 Vulnerable ·Fedoraproject
  • cpe:2.3:a:intel:sgx_dcap:*:*:*:*:*:linux:*:* Versions before 1.14.100.3 Vulnerable ·Intel
  • cpe:2.3:a:intel:sgx_dcap:*:*:*:*:*:windows:*:* Versions before 1.14.100.3 Vulnerable ·Intel
  • cpe:2.3:a:intel:sgx_psw:*:*:*:*:*:windows:*:* Versions before 2.16.100.3 Vulnerable ·Intel
  • cpe:2.3:a:intel:sgx_psw:*:*:*:*:*:linux:*:* Versions before 2.17.100.3 Vulnerable ·Intel
  • cpe:2.3:a:intel:sgx_sdk:*:*:*:*:*:windows:*:* Versions before 2.16.100.3 Vulnerable ·Intel
  • cpe:2.3:a:intel:sgx_sdk:*:*:*:*:*:linux:*:* Versions before 2.17.100.3 Vulnerable ·Intel
  • cpe:2.3:o:vmware:esxi:7.0:-:*:*:*:*:*:* Versions 7.0 Vulnerable ·VMware
Show 15 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:vmware:esxi:7.0:beta:*:*:*:*:*:*7.0 betaVulnerableVMware
cpe:2.3:o:vmware:esxi:7.0:update_1:*:*:*:*:*:*7.0 update_1VulnerableVMware
cpe:2.3:o:vmware:esxi:7.0:update_1a:*:*:*:*:*:*7.0 update_1aVulnerableVMware
cpe:2.3:o:vmware:esxi:7.0:update_1b:*:*:*:*:*:*7.0 update_1bVulnerableVMware
cpe:2.3:o:vmware:esxi:7.0:update_1c:*:*:*:*:*:*7.0 update_1cVulnerableVMware
cpe:2.3:o:vmware:esxi:7.0:update_1d:*:*:*:*:*:*7.0 update_1dVulnerableVMware
cpe:2.3:o:vmware:esxi:7.0:update_2:*:*:*:*:*:*7.0 update_2VulnerableVMware
cpe:2.3:o:vmware:esxi:7.0:update_2a:*:*:*:*:*:*7.0 update_2aVulnerableVMware
cpe:2.3:o:vmware:esxi:7.0:update_2c:*:*:*:*:*:*7.0 update_2cVulnerableVMware
cpe:2.3:o:vmware:esxi:7.0:update_2d:*:*:*:*:*:*7.0 update_2dVulnerableVMware
cpe:2.3:o:vmware:esxi:7.0:update_3c:*:*:*:*:*:*7.0 update_3cVulnerableVMware
cpe:2.3:o:vmware:esxi:7.0:update_3d:*:*:*:*:*:*7.0 update_3dVulnerableVMware
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
  • cpe:2.3:o:vmware:esxi:7.0:beta:*:*:*:*:*:* Versions 7.0 beta Vulnerable ·VMware
  • cpe:2.3:o:vmware:esxi:7.0:update_1:*:*:*:*:*:* Versions 7.0 update_1 Vulnerable ·VMware
  • cpe:2.3:o:vmware:esxi:7.0:update_1a:*:*:*:*:*:* Versions 7.0 update_1a Vulnerable ·VMware
  • cpe:2.3:o:vmware:esxi:7.0:update_1b:*:*:*:*:*:* Versions 7.0 update_1b Vulnerable ·VMware
  • cpe:2.3:o:vmware:esxi:7.0:update_1c:*:*:*:*:*:* Versions 7.0 update_1c Vulnerable ·VMware
  • cpe:2.3:o:vmware:esxi:7.0:update_1d:*:*:*:*:*:* Versions 7.0 update_1d Vulnerable ·VMware
  • cpe:2.3:o:vmware:esxi:7.0:update_2:*:*:*:*:*:* Versions 7.0 update_2 Vulnerable ·VMware
  • cpe:2.3:o:vmware:esxi:7.0:update_2a:*:*:*:*:*:* Versions 7.0 update_2a Vulnerable ·VMware
  • cpe:2.3:o:vmware:esxi:7.0:update_2c:*:*:*:*:*:* Versions 7.0 update_2c Vulnerable ·VMware
  • cpe:2.3:o:vmware:esxi:7.0:update_2d:*:*:*:*:*:* Versions 7.0 update_2d Vulnerable ·VMware
  • cpe:2.3:o:vmware:esxi:7.0:update_3c:*:*:*:*:*:* Versions 7.0 update_3c Vulnerable ·VMware
  • cpe:2.3:o:vmware:esxi:7.0:update_3d:*:*:*:*:*:* Versions 7.0 update_3d Vulnerable ·VMware
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

Red Hat 13 advisories

  • RHSA-2022:8973 Released 2022-12-13 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-tools-libs-devel-5.14.0-70.36.1.el9_0
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) kernel-debug-devel-5.14.0-70.36.1.el9_0, kernel-debug-devel-matched-5.14.0-70.36.1.el9_0, kernel-devel-5.14.0-70.36.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS EUS (v.9.0) bpftool-5.14.0-70.36.1.el9_0, kernel-5.14.0-70.36.1.el9_0, kernel-abi-stablelists-5.14.0-70.36.1.el9_0 +14
  • RHSA-2022:8974 Released 2022-12-13 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt-5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-core-5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-5.14.0-70.36.1.rt21.108.el9_0 +7
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt-5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-core-5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-5.14.0-70.36.1.rt21.108.el9_0 +9
  • RHSA-2022:8267 Released 2022-11-15 · Red Hat rating Moderate
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-162.6.1.el9_1
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-debug-devel-5.14.0-162.6.1.el9_1, kernel-debug-devel-matched-5.14.0-162.6.1.el9_1, kernel-devel-5.14.0-162.6.1.el9_1 +5
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-5.14.0-162.6.1.el9_1, kernel-5.14.0-162.6.1.el9_1, kernel-abi-stablelists-5.14.0-162.6.1.el9_1 +14
Show 10 more Red Hat advisories
  • RHSA-2022:7933 Released 2022-11-15 · Red Hat rating Moderate
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core-5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-5.14.0-162.6.1.rt21.168.el9_1 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core-5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-5.14.0-162.6.1.rt21.168.el9_1 +9
  • RHSA-2022:7279 Released 2022-11-01 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) bpftool-4.18.0-193.93.1.el8_2, kernel-4.18.0-193.93.1.el8_2, kernel-abi-whitelists-4.18.0-193.93.1.el8_2 +14
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.2) bpftool-4.18.0-193.93.1.el8_2, kernel-4.18.0-193.93.1.el8_2, kernel-abi-whitelists-4.18.0-193.93.1.el8_2 +14
    • Red Hat Enterprise Linux BaseOS TUS (v. 8.2) bpftool-4.18.0-193.93.1.el8_2, kernel-4.18.0-193.93.1.el8_2, kernel-abi-whitelists-4.18.0-193.93.1.el8_2 +14
  • RHSA-2022:7280 Released 2022-11-01 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time TUS (v. 8.2) kernel-rt-4.18.0-193.93.1.rt13.143.el8_2, kernel-rt-core-4.18.0-193.93.1.rt13.143.el8_2, kernel-rt-debug-4.18.0-193.93.1.rt13.143.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2) kernel-rt-4.18.0-193.93.1.rt13.143.el8_2, kernel-rt-core-4.18.0-193.93.1.rt13.143.el8_2, kernel-rt-debug-4.18.0-193.93.1.rt13.143.el8_2 +9
  • RHSA-2022:6983 Released 2022-10-18 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS EUS (v.8.4) bpftool-4.18.0-305.65.1.el8_4, kernel-4.18.0-305.65.1.el8_4, kernel-abi-stablelists-4.18.0-305.65.1.el8_4 +19
    • Red Hat Enterprise Linux CRB EUS (v.8.4) kernel-tools-libs-devel-4.18.0-305.65.1.el8_4
  • RHSA-2022:6991 Released 2022-10-18 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV EUS (v.8.4) kernel-rt-4.18.0-305.65.1.rt7.137.el8_4, kernel-rt-core-4.18.0-305.65.1.rt7.137.el8_4, kernel-rt-debug-4.18.0-305.65.1.rt7.137.el8_4 +9
    • Red Hat Enterprise Linux RT EUS (v.8.4) kernel-rt-4.18.0-305.65.1.rt7.137.el8_4, kernel-rt-core-4.18.0-305.65.1.rt7.137.el8_4, kernel-rt-debug-4.18.0-305.65.1.rt7.137.el8_4 +7
  • RHSA-2022:6872 Released 2022-10-11 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.1) bpftool-4.18.0-147.76.1.el8_1, kernel-4.18.0-147.76.1.el8_1, kernel-abi-whitelists-4.18.0-147.76.1.el8_1 +14
  • RHSA-2022:6437 Released 2022-09-13 · Red Hat rating Moderate
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-372.26.1.rt7.183.el8_6, kernel-rt-core-4.18.0-372.26.1.rt7.183.el8_6, kernel-rt-debug-4.18.0-372.26.1.rt7.183.el8_6 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-372.26.1.rt7.183.el8_6, kernel-rt-core-4.18.0-372.26.1.rt7.183.el8_6, kernel-rt-debug-4.18.0-372.26.1.rt7.183.el8_6 +7
  • RHSA-2022:6460 Released 2022-09-13 · Red Hat rating Moderate
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-372.26.1.el8_6, kernel-4.18.0-372.26.1.el8_6, kernel-abi-stablelists-4.18.0-372.26.1.el8_6 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-372.26.1.el8_6
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 kernel-devel-4.18.0-372.26.1.el8_6, perf-4.18.0-372.26.1.el8_6
  • RHSA-2022:5937 Released 2022-08-09 · Red Hat rating Moderate
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1160.76.1.el7, kernel-3.10.0-1160.76.1.el7, kernel-abi-whitelists-3.10.0-1160.76.1.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.76.1.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.76.1.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1160.76.1.el7, kernel-3.10.0-1160.76.1.el7, kernel-abi-whitelists-3.10.0-1160.76.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1160.76.1.el7, kernel-tools-libs-devel-3.10.0-1160.76.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1160.76.1.el7, kernel-3.10.0-1160.76.1.el7, kernel-abi-whitelists-3.10.0-1160.76.1.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.76.1.el7
  • RHSA-2022:5939 Released 2022-08-09 · Red Hat rating Moderate
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1160.76.1.rt56.1220.el7, kernel-rt-debug-3.10.0-1160.76.1.rt56.1220.el7, kernel-rt-debug-devel-3.10.0-1160.76.1.rt56.1220.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1160.76.1.rt56.1220.el7, kernel-rt-debug-3.10.0-1160.76.1.rt56.1220.el7, kernel-rt-debug-devel-3.10.0-1160.76.1.rt56.1220.el7 +7

Microsoft 1 update

  • ADV220002 Released 2022-06-14
    Microsoft Guidance on Intel Processor MMIO Stale Data Vulnerabilities

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Intel(R) Processors — FEDORA-2022-391e24517d

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2022-05529 Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an…Priority LOW 35
    • TI-2022-05531 Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may…Priority LOW 34
    Show all 3 records → Advisory →
  • Advisory ·

    Intel(R) Processors — FEDORA-2022-925fc688c1

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2022-05529 Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an…Priority LOW 35
    • TI-2022-05531 Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may…Priority LOW 34
    Show all 3 records → Advisory →
Show 2 more groups
  • Advisory ·

    Intel(R) Processors — FEDORA-2022-177a008b98

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2022-05529 Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an…Priority LOW 35
    • TI-2022-05531 Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may…Priority LOW 34
    Show all 3 records → Advisory →
  • Advisory ·

    Intel(R) Processors — DSA-5184

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2022-05529 Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an…Priority LOW 35
    • TI-2022-05531 Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may…Priority LOW 34
    Show all 3 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat CodeReady Linux Builder (v. 9)Fixed RHSA-2022:8267
Red Hat CodeReady Linux Builder EUS (v.9.0)Fixed RHSA-2022:8973
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2022:8267
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2022:8973
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2022:6460
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2022:8267
Red Hat Enterprise Linux BaseOS AUS (v. 8.2)Fixed RHSA-2022:7279
Red Hat Enterprise Linux BaseOS E4S (v. 8.1)Fixed RHSA-2022:6872
Red Hat Enterprise Linux BaseOS E4S (v. 8.2)Fixed RHSA-2022:7279
Red Hat Enterprise Linux BaseOS EUS (v.8.4)Fixed RHSA-2022:6983
Red Hat Enterprise Linux BaseOS EUS (v.9.0)Fixed RHSA-2022:8973
Red Hat Enterprise Linux BaseOS TUS (v. 8.2)Fixed RHSA-2022:7279
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2022:6460
Red Hat Enterprise Linux CRB EUS (v.8.4)Fixed RHSA-2022:6983
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2022:5937
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2022:5937
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2022:5937
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2022:6437
Red Hat Enterprise Linux NFV EUS (v.8.4)Fixed RHSA-2022:6991
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2022:6437
Red Hat Enterprise Linux RT EUS (v.8.4)Fixed RHSA-2022:6991
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2022:7933
Red Hat Enterprise Linux Real Time EUS (v.9.0)Fixed RHSA-2022:8974
Red Hat Enterprise Linux Real Time TUS (v. 8.2)Fixed RHSA-2022:7280
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2022:7933
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)Fixed RHSA-2022:8974
Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2)Fixed RHSA-2022:7280
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2022:5937
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2022:5937
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2022:5937
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2022:5937
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2022:5939
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2022:5939
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2022:6460

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-21166

References

Patch 2

Advisory 10

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences