Red Hat Security Advisory: kernel-rt security update
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: i40e: Do not allow untrusted VF to remove administratively set MAC (CVE-2024-26830) * kernel: net/sched: Fix UAF when resolving a clash (CVE-2024-41040) * kernel: mptcp: cope racing subflow creation in mptcp_rcv_space_adjust (CVE-2024-53122) 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 update fixes three vulnerabilities in the Real Time Linux Kernel for Red Hat Enterprise Linux 9.2 Extended Update Support. CVE-2024-26830 prevents untrusted virtual functions (VFs) from removing administratively set MAC addresses on network interfaces. CVE-2024-41040 addresses a use-after-free (UAF) bug in the network scheduler when resolving clashes. CVE-2024-53122 mitigates a race condition during subflow creation in multipath TCP (mptcp_rcv_space_adjust). These fixes improve kernel security by addressing potential privilege and memory corruption issues. The advisory corresponds to RHSA-2025:0064 and requires applying updated kernel-rt packages followed by a system reboot.
Potential Impact
The vulnerabilities could allow an untrusted virtual function to alter network interface MAC addresses, potentially bypassing network controls (CVE-2024-26830). The use-after-free in the network scheduler (CVE-2024-41040) could lead to kernel memory corruption or crashes. The race condition in multipath TCP subflow creation (CVE-2024-53122) could cause instability or unexpected behavior in network connections. These issues affect systems using the kernel-rt packages and could impact system stability and security if exploited.
Mitigation Recommendations
Red Hat has released updated kernel-rt packages that address these vulnerabilities. Users should apply the security update RHSA-2025:0064 for Red Hat Enterprise Linux 9.2 Extended Update Support as soon as possible. A system reboot is required for the update to take effect. No additional mitigations are indicated by the vendor advisory.
Red Hat Security Advisory: kernel-rt security update
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): * kernel: i40e: Do not allow untrusted VF to remove administratively set MAC (CVE-2024-26830) * kernel: net/sched: Fix UAF when resolving a clash (CVE-2024-41040) * kernel: mptcp: cope racing subflow creation in mptcp_rcv_space_adjust (CVE-2024-53122) 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.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Red Hat kernel-rt security update fixes three vulnerabilities in the Real Time Linux Kernel for Red Hat Enterprise Linux 9.2 Extended Update Support. CVE-2024-26830 prevents untrusted virtual functions (VFs) from removing administratively set MAC addresses on network interfaces. CVE-2024-41040 addresses a use-after-free (UAF) bug in the network scheduler when resolving clashes. CVE-2024-53122 mitigates a race condition during subflow creation in multipath TCP (mptcp_rcv_space_adjust). These fixes improve kernel security by addressing potential privilege and memory corruption issues. The advisory corresponds to RHSA-2025:0064 and requires applying updated kernel-rt packages followed by a system reboot.
Potential Impact
The vulnerabilities could allow an untrusted virtual function to alter network interface MAC addresses, potentially bypassing network controls (CVE-2024-26830). The use-after-free in the network scheduler (CVE-2024-41040) could lead to kernel memory corruption or crashes. The race condition in multipath TCP subflow creation (CVE-2024-53122) could cause instability or unexpected behavior in network connections. These issues affect systems using the kernel-rt packages and could impact system stability and security if exploited.
Mitigation Recommendations
Red Hat has released updated kernel-rt packages that address these vulnerabilities. Users should apply the security update RHSA-2025:0064 for Red Hat Enterprise Linux 9.2 Extended Update Support as soon as possible. A system reboot is required for the update to take effect. No additional mitigations are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:0064
- Cve Count
- 3
- Additional Cves
- ["CVE-2024-41040","CVE-2024-53122"]
Threat ID: 6a3da1e94853345fc182faff
Added to database: 06/25/2026, 21:47:21 UTC
Last enriched: 06/25/2026, 22:37:57 UTC
Last updated: 09/10/2026, 19:36:47 UTC
Views: 46
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