Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | kernel-rt |
Timeline
- Apr 7, 2026 CVE Published
- Apr 7, 2026 Distribution Patch
=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3293 kernel-rt security update 7 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: kernel-rt Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2026-23231 CVE-2024-26984 CVE-2025-71238 CVE-2026-23193 Original Bulletin: https://access.redhat.com/errata/RHSA-2026:6572 Comment: CVSS (Max): 7.5 CVE-2026-23231 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H EPSS (Max): 0.0% (7th) CVE-2026-23193 2026-04-05 - --------------------------BEGIN INCLUDED TEXT-------------------- RHSA-2026:6572 - Security Advisory Issued: 2026-04-06 Updated: 2026-04-06 Synopsis Kernel-rt security update Type/Severity Security Advisory: Moderate Topic An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): o kernel: nouveau: fix instmem race condition around ptr stores (CVE-2024-26984) o kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193) o kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain() (CVE-2026-23231) o kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. (CVE-2025-71238) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Affected Products o Red Hat Enterprise Linux for Real Time 8 x86_64 o Red Hat Enterprise Linux for Real Time for NFV 8 x86_64 o Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64 Fixes o BZ - 2278333 - CVE-2024-26984 kernel: nouveau: fix instmem race condition around ptr stores o BZ - 2439887 - CVE-2026-23193 kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() o BZ - 2444376 - CVE-2026-23231 kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain() o BZ - 2444398 - CVE-2025-71238 kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. CVEs o CVE-2024-26984 o CVE-2025-71238 o CVE-2026-23193 o CVE-2026-23231 References o https://access.redhat.com/security/updates/classification/#moderate - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. 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Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | kernel-rt |