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: netfilter: ipset: add missing range check in bitmap_ip_uadt (CVE-2024-53141) * kernel: vsock: Keep the binding until socket destruction (CVE-2025-21756) 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 kernel-rt packages for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions include fixes for two security vulnerabilities. CVE-2024-53141 addresses a missing range check in the netfilter ipset bitmap_ip_uadt function, which is a validation issue (CWE-20). CVE-2025-21756 fixes a use-after-free condition related to vsock socket binding persistence (CWE-416). These issues could potentially affect kernel stability or security. Red Hat has released updated kernel-rt packages to remediate these vulnerabilities, and a system reboot is required to apply the fixes.
Potential Impact
The vulnerabilities affect the Real Time Linux Kernel used in Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. The missing range check could lead to improper handling of network packet sets, and the vsock binding issue could cause use-after-free conditions, potentially leading to system instability or security risks. The advisory rates the impact as important, indicating a high severity but not critical. There are no known exploits in the wild at the time of the advisory.
Mitigation Recommendations
Red Hat has released updated kernel-rt packages that fix these vulnerabilities. Users of Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions should apply the security update as described in the Red Hat advisory RHSA-2025:7896 and reboot their systems to ensure the fixes take effect. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.
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: netfilter: ipset: add missing range check in bitmap_ip_uadt (CVE-2024-53141) * kernel: vsock: Keep the binding until socket destruction (CVE-2025-21756) 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
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The kernel-rt packages for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions include fixes for two security vulnerabilities. CVE-2024-53141 addresses a missing range check in the netfilter ipset bitmap_ip_uadt function, which is a validation issue (CWE-20). CVE-2025-21756 fixes a use-after-free condition related to vsock socket binding persistence (CWE-416). These issues could potentially affect kernel stability or security. Red Hat has released updated kernel-rt packages to remediate these vulnerabilities, and a system reboot is required to apply the fixes.
Potential Impact
The vulnerabilities affect the Real Time Linux Kernel used in Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. The missing range check could lead to improper handling of network packet sets, and the vsock binding issue could cause use-after-free conditions, potentially leading to system instability or security risks. The advisory rates the impact as important, indicating a high severity but not critical. There are no known exploits in the wild at the time of the advisory.
Mitigation Recommendations
Red Hat has released updated kernel-rt packages that fix these vulnerabilities. Users of Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions should apply the security update as described in the Red Hat advisory RHSA-2025:7896 and reboot their systems to ensure the fixes take effect. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:7896
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-21756"]
Threat ID: 6a3da1d14853345fc18255ea
Added to database: 06/25/2026, 21:46:57 UTC
Last enriched: 06/25/2026, 22:10:46 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 21
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