Red Hat Updates RHEL 9 and 10 Kernels for IPv4 TCP and Other Flaws
Tech GuruQuick Answer
Red Hat released separate RHEL 9 and 10 kernel updates covering CVE-2026-98432 and additional kernel vulnerabilities; the CVE sets differ by stream. Match installed packages and support entitlements to the errata, apply the supported fixes, validate service operation, and retain evidence.
Confirm Scope And Apply The Supported Remediation
What to do now: Identify RHEL major and minor streams, architecture, installed and running kernels, external modules, cluster roles and IPv4-facing services. Match product, architecture, package epoch/version/release and support stream to the individual erratum; apply each CVE only where its documented prerequisites hold. Apply the applicable signed kernel erratum: 5.14.0-687.64.1.el9_8 for the listed RHEL 9 products or 6.12.0-211.72.1.el10_2 for the listed RHEL 10 products, and reboot. Verify the running kernel and test network connectivity, storage, failover and required external modules; retain package, boot and service-health evidence.
Last verified: 2026-11-02 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | RHEL 9 and RHEL 10 kernels |
|---|---|
| Advisory | RHSA-2026:93412 / RHSA-2026:93413 |
| CVEs | CVE-2026-22977, CVE-2026-46174, CVE-2026-52929, CVE-2026-53228, CVE-2026-53270, CVE-2026-64191, CVE-2026-64303, CVE-2026-68169, CVE-2026-68398, CVE-2026-72083, CVE-2026-74283, CVE-2026-74510, CVE-2026-74582, CVE-2026-80586, CVE-2026-89603, CVE-2026-89932, CVE-2026-90011, CVE-2026-93787, CVE-2026-93827, CVE-2026-98222, CVE-2026-98364, CVE-2026-98432, CVE-2026-98466, CVE-2026-98725 |
| Authoritative release date | 2026-11-01T22:16:35Z (latest release in this group; individual release dates below) |
| Authority revision date | 2026-11-02T01:52:22Z (latest authority revision in this group) |
| Affected versions | Advisory-listed packages before the corresponding fixed builds on 10Base-SMTV; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 9); Red Hat Enterprise Linux BaseOS (v. 10); Red Hat Enterprise Linux BaseOS (v. 9); Red Hat Enterprise Linux CodeReady Linux Builder (v. 10); Red Hat Enterprise Linux CodeReady Linux Builder (v. 9); Red Hat Enterprise Linux Hidden (v. 10); Red Hat Enterprise Linux Real Time (v. 10); Red Hat Enterprise Linux Real Time (v. 9); Red Hat Enterprise Linux Real Time for NFV (v. 10); Red Hat Enterprise Linux Real Time for NFV (v. 9). |
| Fixed version | kernel-0:5.14.0-687.64.1.el9_8.src; kernel-0:6.12.0-211.72.1.el10_2.src |
| CVSS base score | 5.5-9.8 (CVSS v3.1; CVE-specific) |
| CVSS severity | Medium to Critical |
| Exploitation status | The cited Red Hat advisories do not state that these issues are being maliciously exploited.; no exploitation claim is inferred. |
Authority-Specific Scope And Version Evidence
| RHSA-2026:93412 | Released 2026-11-01T22:09:07Z; revised 2026-11-02T01:52:21Z. Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9). Fixed source package families: kernel-0:5.14.0-687.64.1.el9_8.src. CVSS: 7-9.8 (CVSS v3.1; CVE-specific); High to Critical. Vendor rating: Important. |
|---|---|
| RHSA-2026:93413 | Released 2026-11-01T22:16:35Z; revised 2026-11-02T01:52:22Z. 10Base-SMTV, Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10), Red Hat Enterprise Linux Hidden (v. 10), Red Hat Enterprise Linux Real Time (v. 10), Red Hat Enterprise Linux Real Time for NFV (v. 10). Fixed source package families: kernel-0:6.12.0-211.72.1.el10_2.src. CVSS: 5.5-9.8 (CVSS v3.1; CVE-specific); Medium to Critical. Vendor rating: Important. |
What Changed
Red Hat released separate RHEL 9 and 10 kernel updates covering CVE-2026-98432 and additional kernel vulnerabilities; the CVE sets differ by stream.
What To Validate Now
- Inventory. Identify RHEL major and minor streams, architecture, installed and running kernels, external modules, cluster roles and IPv4-facing services.
- Establish applicability. Match product, architecture, package epoch/version/release and support stream to the individual erratum; apply each CVE only where its documented prerequisites hold.
- Remediate. Apply the applicable signed kernel erratum: 5.14.0-687.64.1.el9_8 for the listed RHEL 9 products or 6.12.0-211.72.1.el10_2 for the listed RHEL 10 products, and reboot.
- Validate. Verify the running kernel and test network connectivity, storage, failover and required external modules; retain package, boot and service-health evidence.
- Retain evidence. Preserve asset and owner identifiers, the applicability decision, before-and-after versions, change approval, installation output, validation results, and any exception or rollback record.
Operational Cautions
Schedule a controlled reboot and validate driver compatibility. Red Hat rates the combined errata Important while individual CVSS scores extend to Critical; these are different measures. CVSS values are the authority-provided per-CVE scores, not a score for the whole update. Retain the advisory, inventory, approval, package and validation records.
Evidence To Retain
- Exact product, release stream, package or application version, enabled feature, environment, and accountable owner.
- UTC timestamps, authority revision, approved change record, installer or package-manager output, and resulting version.
- Relevant logs and monitoring evidence, test results, exceptions, compensating controls, and rollback decisions.
Related TechGeeks Resources
Authoritative References
Correction policy: If the authority changes affected versions, fixed versions, severity, exploitation information, mitigations, or required action, TechGeeks will update this notice and its verification date.
