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ALSA-2025:21397 Not scored

Moderate: 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: vsock/virtio: Validate length in packet header before skb_put() (CVE-2025-39718) 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.

Exploit probability Not scored
Published November 17, 2025
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

AlmaLinux:8 kernel-rt-debug-modules-extra
AlmaLinux:8 kernel-rt
AlmaLinux:8 kernel-rt-core
AlmaLinux:8 kernel-rt-devel
AlmaLinux:8 kernel-rt-modules
AlmaLinux:8 kernel-rt-modules-extra
AlmaLinux:8 kernel-rt-debug
AlmaLinux:8 kernel-rt-debug-core
AlmaLinux:8 kernel-rt-debug-devel
AlmaLinux:8 kernel-rt-debug-modules

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities ALSA-2025:21397

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: vsock/virtio: Validate length in packet header before skb_put() (CVE-2025-39718) 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.

View original source

05 / REFERENCES

Further evidence