Red Hat Security Advisory: kernel-rt security update
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Linux kernel: Use-after-free in BPF sockmap can lead to denial of service and privilege escalation (CVE-2025-38154) * kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem (CVE-2025-38180) * kernel: Kernel: Double free vulnerability in exFAT filesystem can lead to denial of service (CVE-2025-38206) * kernel: Linux kernel:A use-after-free in bridge multicast in br_multicast_port_ctx_init (CVE-2025-38248) * 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.
AI Analysis
Technical Summary
The Red Hat kernel-rt security advisory (RHSA-2026:7100) addresses five vulnerabilities in the Real Time Linux Kernel packages. These include a use-after-free in BPF sockmap (CVE-2025-38154), a use-after-free in the ATM subsystem (CVE-2025-38180), a double free in the exFAT filesystem (CVE-2025-38206), a use-after-free in bridge multicast initialization (CVE-2025-38248), and an error recovery fix in macvlan (CVE-2026-23209). The vulnerabilities can cause denial of service and privilege escalation. Red Hat has released updated kernel-rt packages for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions to remediate these issues. A system reboot is required after applying the update.
Potential Impact
The vulnerabilities can lead to denial of service conditions and privilege escalation on affected systems running the Real Time Linux Kernel. This can disrupt system availability and potentially allow attackers to gain elevated privileges. The overall security impact is rated as moderate by Red Hat.
Mitigation Recommendations
Red Hat has released updated kernel-rt packages that fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:7100 and reboot their systems to ensure the fixes take effect. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No alternative mitigations are indicated; applying the official update is required.
Red Hat Security Advisory: kernel-rt security update
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Linux kernel: Use-after-free in BPF sockmap can lead to denial of service and privilege escalation (CVE-2025-38154) * kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem (CVE-2025-38180) * kernel: Kernel: Double free vulnerability in exFAT filesystem can lead to denial of service (CVE-2025-38206) * kernel: Linux kernel:A use-after-free in bridge multicast in br_multicast_port_ctx_init (CVE-2025-38248) * 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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Red Hat kernel-rt security advisory (RHSA-2026:7100) addresses five vulnerabilities in the Real Time Linux Kernel packages. These include a use-after-free in BPF sockmap (CVE-2025-38154), a use-after-free in the ATM subsystem (CVE-2025-38180), a double free in the exFAT filesystem (CVE-2025-38206), a use-after-free in bridge multicast initialization (CVE-2025-38248), and an error recovery fix in macvlan (CVE-2026-23209). The vulnerabilities can cause denial of service and privilege escalation. Red Hat has released updated kernel-rt packages for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions to remediate these issues. A system reboot is required after applying the update.
Potential Impact
The vulnerabilities can lead to denial of service conditions and privilege escalation on affected systems running the Real Time Linux Kernel. This can disrupt system availability and potentially allow attackers to gain elevated privileges. The overall security impact is rated as moderate by Red Hat.
Mitigation Recommendations
Red Hat has released updated kernel-rt packages that fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:7100 and reboot their systems to ensure the fixes take effect. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No alternative mitigations are indicated; applying the official update is required.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:7100
- Cve Count
- 5
- Additional Cves
- ["CVE-2025-38180","CVE-2025-38206","CVE-2025-38248","CVE-2026-23209"]
- Cvss Version
- null
Threat ID: 6a27e9928dd33fbd85169e54
Added to database: 6/9/2026, 10:23:14 AM
Last enriched: 6/9/2026, 10:35:22 AM
Last updated: 6/10/2026, 6:16:43 AM
Views: 5
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