VDB

RHSA-2025%3A21920

RHSA-2025%3A21920 PUBLISHED CVSS 7.599999904632568 HIGH

Record from OSV · Published November 24, 2025

Red Hat Security Advisory: kernel-rt security update

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

PackageEcosystemFixed in
kernel-rt-develRed Hat:enterprise_linux:8::realtime4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10
kernel-rt-modulesRed Hat:enterprise_linux:8::nfv4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10
kernel-rt-debugRed Hat:enterprise_linux:8::realtime4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10
kernel-rt-kvmRed Hat:enterprise_linux:8::realtime4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10
kernel-rtRed Hat:enterprise_linux:8::realtime4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10
kernel-rt-debugRed Hat:enterprise_linux:8::nfv4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10
kernel-rt-debug-kvmRed Hat:enterprise_linux:8::realtime4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10
kernel-rt-debug-coreRed Hat:enterprise_linux:8::nfv4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10
kernel-rt-debuginfoRed Hat:enterprise_linux:8::nfv4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10
kernel-rt-kvmRed Hat:enterprise_linux:8::nfv4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10
kernel-rt-debug-debuginfoRed Hat:enterprise_linux:8::realtime4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10
kernel-rt-debug-develRed Hat:enterprise_linux:8::nfv4.18.0-553.85.1.rt7.426.el8, 0:4.18.0-553.85.1.rt7.426.el8_10

18 more packages have a fixed version. See every fix in Lookup.

Risk scores

CVSS 3.1
7.599999904632568
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Affected products

VendorProductVersions
Red Hat:enterprise_linux:8::realtimekernel-rt-devel0, 0
Red Hat:enterprise_linux:8::nfvkernel-rt-modules0, 0
Red Hat:enterprise_linux:8::realtimekernel-rt-debug0, 0
Red Hat:enterprise_linux:8::realtimekernel-rt-kvm0, 0
Red Hat:enterprise_linux:8::realtimekernel-rt0, 0
Red Hat:enterprise_linux:8::nfvkernel-rt-debug0, 0
Red Hat:enterprise_linux:8::realtimekernel-rt-debug-kvm0, 0
Red Hat:enterprise_linux:8::nfvkernel-rt-debug-core0, 0
Red Hat:enterprise_linux:8::nfvkernel-rt-debuginfo0, 0
Red Hat:enterprise_linux:8::nfvkernel-rt-kvm0, 0
Red Hat:enterprise_linux:8::realtimekernel-rt-debug-debuginfo0, 0
Red Hat:enterprise_linux:8::nfvkernel-rt-debug-devel0, 0
Red Hat:enterprise_linux:8::nfvkernel-rt-debug-modules-extra0, 0
Red Hat:enterprise_linux:8::nfvkernel-rt-devel0, 0
Red Hat:enterprise_linux:8::nfvkernel-rt0, 0
Red Hat:enterprise_linux:8::nfvkernel-rt-core0, 0
Red Hat:enterprise_linux:8::realtimekernel-rt-debug-core0, 0
Red Hat:enterprise_linux:8::realtimekernel-rt-debug-modules0, 0
Red Hat:enterprise_linux:8::nfvkernel-rt-modules-extra0, 0
Red Hat:enterprise_linux:8::realtimekernel-rt-debug-devel0, 0

…and 10 more

Timeline

  • Nov 24, 2025 CVE Published
  • Apr 15, 2026 CVE Updated
  • May 1, 2026 Distribution Patch (2 in total, the first dated here)
  • May 1, 2026 Security Advisory (4 in total, the first dated here)

Query this with the API

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vulnetix vdb vuln RHSA-2025%3A21920
vulnetix vdb fixes RHSA-2025%3A21920

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curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/RHSA-2025%253A21920/fixes/registry"

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References

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