Risk Scores
CVSS v3.1
7.300000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | kernel-rt |
Timeline
- Nov 20, 2025 PoC Published
- Apr 9, 2026 CVE Published
- Apr 9, 2026 Distribution Patch
=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3407 kernel-rt security update 9 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: kernel-rt Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2025-38180 CVE-2025-38206 CVE-2025-38248 CVE-2025-38154 CVE-2026-23209 Original Bulletin: https://access.redhat.com/errata/RHSA-2026:7100 Comment: CVSS (Max): 7.3 CVE-2025-38206 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H EPSS (Max): 0.0% (7th) CVE-2025-38206 2026-04-08 - --------------------------BEGIN INCLUDED TEXT-------------------- RHSA-2026:7100 - Security Advisory Issued: 2026-04-08 Updated: 2026-04-08 Synopsis Kernel-rt security update Type/Severity Security Advisory: Moderate Topic An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. 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: Linux kernel: Use-after-free in BPF sockmap can lead to denial of service and privilege escalation (CVE-2025-38154) o kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem (CVE-2025-38180) o kernel: Kernel: Double free vulnerability in exFAT filesystem can lead to denial of service (CVE-2025-38206) o kernel: Linux kernel:A use-after-free in bridge multicast in br_multicast_port_ctx_init (CVE-2025-38248) o kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209) 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 x86_64 - Update Services for SAP Solutions 9.0 x86_64 Fixes o BZ - 2376056 - CVE-2025-38154 kernel: Linux kernel: Use-after-free in BPF sockmap can lead to denial of service and privilege escalation o BZ - 2376376 - CVE-2025-38180 kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem o BZ - 2376377 - CVE-2025-38206 kernel: Kernel: Double free vulnerability in exFAT filesystem can lead to denial of service o BZ - 2378981 - CVE-2025-38248 kernel: Linux kernel:A use-after-free in bridge multicast in br_multicast_port_ctx_init o BZ - 2439900 - CVE-2026-23209 kernel: macvlan: fix error recovery in macvlan_common_newlink() CVEs o CVE-2025-38154 o CVE-2025-38180 o CVE-2025-38206 o CVE-2025-38248 o CVE-2026-23209 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. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. 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 |