Red Hat RHEL 8.8 SAP and TUS Kernel Update Addresses 18 Vulnerabilities
Tech GuruQuick Answer
Red Hat published RHSA-2026:77301 for RHEL 8.8 SAP E4S and Telecommunications Update Service kernel packages. Inventory the exact affected scope, apply kernel 4.18.0-477.172.1.el8_8 and the matching advisory-listed packages, followed by a controlled reboot, validate dependent operations, and preserve change evidence.
Validate kernel Scope And Apply The Supported Fix
What to do now: Inventory RHEL 8.8 SAP E4S and Telecommunications Update Service kernel packages, match versions and enabled features to the authority's scope, apply supported remediation, validate representative operations, and document exceptions.
Last verified: 2026-10-07 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | RHEL 8.8 SAP E4S and Telecommunications Update Service kernel packages |
|---|---|
| Advisory | RHSA-2026:77301 |
| CVEs | CVE-2023-53781, CVE-2025-68347, CVE-2026-31663, CVE-2026-43020, CVE-2026-46043, CVE-2026-46133, CVE-2026-52924, CVE-2026-53239, CVE-2026-63917, CVE-2026-63919, CVE-2026-63921, CVE-2026-64582, CVE-2026-68294, CVE-2026-68426, CVE-2026-68480, CVE-2026-74746, CVE-2026-80863, CVE-2026-80864 |
| Authoritative release date | 2026-10-07 08:05:21 UTC |
| Authority revision date | 2026-10-07 10:26:21 UTC |
| Affected versions | The exact supported RHEL 8.8 SAP E4S and Telecommunications Update Service kernel packages builds marked affected in the advisory product-status relationships. |
| Fixed version | kernel 4.18.0-477.172.1.el8_8 and the matching advisory-listed packages, followed by a controlled reboot |
| CVSS base score | 7.0 / 7.1 / 7.3 / 7.8 / 8.8 (CVSS v3.1) |
| CVSS severity | High |
| Exploitation status | Not stated by the authority; no exploitation claim is inferred. |
What Changed
Red Hat published an authority-rated Important kernel security update with branch-specific fixed content for the listed CVEs.
What To Validate Now
- Inventory. Locate RHEL 8.8 SAP E4S and Telecommunications Update Service kernel packages; record versions, enabled features, exposure paths, owners, dependencies, support channels, and maintenance groups.
- Establish applicability. Compare every deployment with the authority's affected statement: The exact supported RHEL 8.8 SAP E4S and Telecommunications Update Service kernel packages builds marked affected in the advisory product-status relationships. Do not infer applicability from product family, CVSS, or Internet reachability alone.
- Remediate. Apply kernel 4.18.0-477.172.1.el8_8 and the matching advisory-listed packages, followed by a controlled reboot through the authority-supported channel and follow the current advisory.
- Validate. Confirm the resulting kernel build or managed state, exercise representative services and recovery paths, monitor for regressions, and retain the result.
- 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
Retain the prior boot entry, rebuild external modules where required, reboot in a controlled window, and validate workload and recovery behavior. Preserve pre-change state, installation output, logs, validation evidence, and rollback decisions.
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.
