VDB

RHSA-2026%3A2821

RHSA-2026%3A2821 PUBLISHED CVSS 7.300000190734863 HIGH

Record from OSV · Published February 18, 2026

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-kvmRed Hat:enterprise_linux:8::realtime4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-debug-modules-extraRed Hat:enterprise_linux:8::realtime4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-debug-coreRed Hat:enterprise_linux:8::realtime4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-modulesRed Hat:enterprise_linux:8::nfv4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-debug-coreRed Hat:enterprise_linux:8::nfv4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-modules-extraRed Hat:enterprise_linux:8::nfv4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-coreRed Hat:enterprise_linux:8::nfv4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-modules-extraRed Hat:enterprise_linux:8::realtime4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-develRed Hat:enterprise_linux:8::nfv4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-kvmRed Hat:enterprise_linux:8::nfv4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-debug-debuginfoRed Hat:enterprise_linux:8::realtime4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-debugRed Hat:enterprise_linux:8::nfv4.18.0-553.105.1.rt7.446.el8, 0:4.18.0-553.105.1.rt7.446.el8_10

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

Risk scores

CVSS 3.1
7.300000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

Affected products

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

…and 10 more

Timeline

  • Feb 18, 2026 CVE Published
  • Apr 23, 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-2026%3A2821
vulnetix vdb fixes RHSA-2026%3A2821

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curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/RHSA-2026%253A2821/fixes/registry"

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References

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