CVE-2022-21123
Description
Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Mitigation details
Description hw: cpu: incomplete clean-up of multi-core shared buffers (aka SBDR) Red Hat statement Red Hat has very limited to no visibility and control over binary blobs provided by third-party vendors. Red Hat relies heavily on the vendors to provide timely updates and information about included changes for this content and in most cases merely acts as a release vehicle between the third-party…
Description
hw: cpu: incomplete clean-up of multi-core shared buffers (aka SBDR)
Red Hat statement
Red Hat has very limited to no visibility and control over binary blobs provided by third-party vendors. Red Hat relies heavily on the vendors to provide timely updates and information about included changes for this content and in most cases merely acts as a release vehicle between the third-party vendor and Red Hat customers with no possibility of influencing or even documenting the changes. Unless explicitly stated, the level of insight, oversight, and control Red Hat has does not meet the criteria required (in terms of Red Hat ownership of development processes, QA, and documentation) for releasing this content as RHSA. For more information please contact the binary content vendor.
CVSS v3: 6.1 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N)
Errata / fixed releases
| Product | Package | Advisory | Released |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-1160.76.1.rt56.1220.el7 | RHSA-2022:5939 | 2022-08-09T00:00:00Z |
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-1160.76.1.el7 | RHSA-2022:5937 | 2022-08-09T00:00:00Z |
| Red Hat Enterprise Linux 8 | kernel-rt-0:4.18.0-372.26.1.rt7.183.el8_6 | RHSA-2022:6437 | 2022-09-13T00:00:00Z |
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-372.26.1.el8_6 | RHSA-2022:6460 | 2022-09-13T00:00:00Z |
| Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions | kernel-0:4.18.0-147.76.1.el8_1 | RHSA-2022:6872 | 2022-10-11T00:00:00Z |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | kernel-0:4.18.0-193.93.1.el8_2 | RHSA-2022:7279 | 2022-11-01T00:00:00Z |
| Red Hat Enterprise Linux 8.2 Telecommunications Update Service | kernel-rt-0:4.18.0-193.93.1.rt13.143.el8_2 | RHSA-2022:7280 | 2022-11-01T00:00:00Z |
| Red Hat Enterprise Linux 8.2 Telecommunications Update Service | kernel-0:4.18.0-193.93.1.el8_2 | RHSA-2022:7279 | 2022-11-01T00:00:00Z |
| Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions | kernel-0:4.18.0-193.93.1.el8_2 | RHSA-2022:7279 | 2022-11-01T00:00:00Z |
| Red Hat Enterprise Linux 8.4 Extended Update Support | kernel-rt-0:4.18.0-305.65.1.rt7.137.el8_4 | RHSA-2022:6991 | 2022-10-18T00:00:00Z |
| Red Hat Enterprise Linux 8.4 Extended Update Support | kernel-0:4.18.0-305.65.1.el8_4 | RHSA-2022:6983 | 2022-10-18T00:00:00Z |
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-162.6.1.el9_1 | RHSA-2022:8267 | 2022-11-15T00:00:00Z |
| Red Hat Enterprise Linux 9 | kernel-rt-0:5.14.0-162.6.1.rt21.168.el9_1 | RHSA-2022:7933 | 2022-11-15T00:00:00Z |
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-162.6.1.el9_1 | RHSA-2022:8267 | 2022-11-15T00:00:00Z |
| Red Hat Enterprise Linux 9.0 Extended Update Support | kernel-0:5.14.0-70.36.1.el9_0 | RHSA-2022:8973 | 2022-12-13T00:00:00Z |
| Red Hat Enterprise Linux 9.0 Extended Update Support | kernel-rt-0:5.14.0-70.36.1.rt21.108.el9_0 | RHSA-2022:8974 | 2022-12-13T00:00:00Z |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | kernel-0:4.18.0-372.26.1.el8_6 | RHSA-2022:6460 | 2022-09-13T00:00:00Z |
Package state
| Product | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Affected |
| Red Hat Enterprise Linux 6 | microcode_ctl | Affected |
| Red Hat Enterprise Linux 7 | microcode_ctl | Affected |
| Red Hat Enterprise Linux 8 | microcode_ctl | Affected |
| Red Hat Enterprise Linux 9 | microcode_ctl | Affected |
Apply commands
yum update -y kernel-rt
# or:
dnf upgrade -y kernel-rt
Affected
| Vendor | Product | Version |
|---|---|---|
| redhat | Red Hat Enterprise Linux 6 | Affected |
| redhat | Red Hat Enterprise Linux 6 | Affected |
| redhat | Red Hat Enterprise Linux 7 | Affected |
| redhat | Red Hat Enterprise Linux 8 | Affected |
| redhat | Red Hat Enterprise Linux 9 | Affected |
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| almalinux | 9 | fixed | kernel-rt-debug-core-5.14.0-162.6.1.rt21.168.el9_1.x86_64.rpm |
| rhel | 9 | fixed | |
| sles | affected | | |
| rocky | 8 | fixed | |
| debian | bookworm | fixed | 3.20220510.1 |
| debian | bullseye | fixed | 3.20220510.1~deb11u1 |
| debian | forky | fixed | 3.20220510.1 |
| debian | sid | fixed | 3.20220510.1 |
| debian | trixie | fixed | 3.20220510.1 |
| rocky | 9 | fixed | |
| almalinux | 8 | fixed | kernel-rt-debug-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm |
References
- https://access.redhat.com/errata/RHSA-2022:7933
- https://bugzilla.redhat.com/1980646
- https://bugzilla.redhat.com/2037386
- https://bugzilla.redhat.com/2051444
- https://bugzilla.redhat.com/2052312
- https://bugzilla.redhat.com/2053632
- https://bugzilla.redhat.com/2058395
- https://bugzilla.redhat.com/2059928
- https://bugzilla.redhat.com/2066614
- https://bugzilla.redhat.com/2066706
- https://bugzilla.redhat.com/2066819
- https://bugzilla.redhat.com/2070205
- https://bugzilla.redhat.com/2071022
- https://bugzilla.redhat.com/2073064
- https://bugzilla.redhat.com/2074208
- https://bugzilla.redhat.com/2084125
- https://bugzilla.redhat.com/2084183
- https://bugzilla.redhat.com/2084479
- https://bugzilla.redhat.com/2088021
- https://bugzilla.redhat.com/2089815
- https://bugzilla.redhat.com/2090226
- https://bugzilla.redhat.com/2090237
- https://bugzilla.redhat.com/2090240
- https://bugzilla.redhat.com/2090241
- https://bugzilla.redhat.com/2103148
💬 Discuss CVE-2022-21123 on VIR Community →
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.