CriticalFix available

Red Hat Security Advisory: kernel-rt security update

Type: advisorySource: OSV1 source record

Announced 1 Dec 2025Source revision 1

RHSA-2025:22387

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:RHSA-2025:22387

kernel-rt

Source reference: /affected/0/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/0/ranges
Prerequisites: Not stated in this record

kernel-rt-core

Source reference: /affected/1/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/1/ranges
Prerequisites: Not stated in this record

kernel-rt-debug

Source reference: /affected/2/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

kernel-rt-debug-core

Source reference: /affected/3/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/3/ranges
Prerequisites: Not stated in this record

kernel-rt-debug-debuginfo

Source reference: /affected/4/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/4/ranges
Prerequisites: Not stated in this record

kernel-rt-debug-devel

Source reference: /affected/5/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/5/ranges
Prerequisites: Not stated in this record

kernel-rt-debug-kvm

Source reference: /affected/6/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/6/ranges
Prerequisites: Not stated in this record

kernel-rt-debug-modules

Source reference: /affected/7/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/7/ranges
Prerequisites: Not stated in this record

kernel-rt-debug-modules-extra

Source reference: /affected/8/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/8/ranges
Prerequisites: Not stated in this record

kernel-rt-debuginfo

Source reference: /affected/9/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/9/ranges
Prerequisites: Not stated in this record

kernel-rt-debuginfo-common-x86_64

Source reference: /affected/10/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/10/ranges
Prerequisites: Not stated in this record

kernel-rt-devel

Source reference: /affected/11/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/11/ranges
Prerequisites: Not stated in this record

kernel-rt-kvm

Source reference: /affected/12/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/12/ranges
Prerequisites: Not stated in this record

kernel-rt-modules

Source reference: /affected/13/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/13/ranges
Prerequisites: Not stated in this record

kernel-rt-modules-extra

Source reference: /affected/14/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/14/ranges
Prerequisites: Not stated in this record

kernel-rt

Source reference: /affected/15/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/15/ranges
Prerequisites: Not stated in this record

kernel-rt-core

Source reference: /affected/16/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/16/ranges
Prerequisites: Not stated in this record

kernel-rt-debug

Source reference: /affected/17/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/17/ranges
Prerequisites: Not stated in this record

kernel-rt-debug-core

Source reference: /affected/18/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/18/ranges
Prerequisites: Not stated in this record

kernel-rt-debug-debuginfo

Source reference: /affected/19/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/19/ranges
Prerequisites: Not stated in this record

kernel-rt-debug-devel

Source reference: /affected/20/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/20/ranges
Prerequisites: Not stated in this record

kernel-rt-debug-modules

Source reference: /affected/21/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/21/ranges
Prerequisites: Not stated in this record

kernel-rt-debug-modules-extra

Source reference: /affected/22/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/22/ranges
Prerequisites: Not stated in this record

kernel-rt-debuginfo

Source reference: /affected/23/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/23/ranges
Prerequisites: Not stated in this record

kernel-rt-debuginfo-common-x86_64

Source reference: /affected/24/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/24/ranges
Prerequisites: Not stated in this record

kernel-rt-devel

Source reference: /affected/25/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/25/ranges
Prerequisites: Not stated in this record

kernel-rt-modules

Source reference: /affected/26/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/26/ranges
Prerequisites: Not stated in this record

kernel-rt-modules-extra

Source reference: /affected/27/package/name

Affected versions: Not stated in this record
Fixed versions: 0:4.18.0-553.87.1.rt7.428.el8_10
Source reference: /affected/27/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

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          },
          {
            "fixed": "0:4.18.0-553.87.1.rt7.428.el8_10"
          }
        ]
      }
    ],
    "package": {
      "name": "kernel-rt-devel",
      "purl": "pkg:rpm/redhat/kernel-rt-devel",
      "ecosystem": "Red Hat:enterprise_linux:8::realtime"
    },
    "database_specific": {
      "source": "https://security.access.redhat.com/data/osv/RHSA-2025:22387.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0:4.18.0-553.87.1.rt7.428.el8_10"
          }
        ]
      }
    ],
    "package": {
      "name": "kernel-rt-modules",
      "purl": "pkg:rpm/redhat/kernel-rt-modules",
      "ecosystem": "Red Hat:enterprise_linux:8::realtime"
    },
    "database_specific": {
      "source": "https://security.access.redhat.com/data/osv/RHSA-2025:22387.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0:4.18.0-553.87.1.rt7.428.el8_10"
          }
        ]
      }
    ],
    "package": {
      "name": "kernel-rt-modules-extra",
      "purl": "pkg:rpm/redhat/kernel-rt-modules-extra",
      "ecosystem": "Red Hat:enterprise_linux:8::realtime"
    },
    "database_specific": {
      "source": "https://security.access.redhat.com/data/osv/RHSA-2025:22387.json"
    }
  }
]

Related CVEs: CVE-2023-53513
Source reference: /upstream
CVE-2025-38724
Source reference: /upstream
CVE-2025-39825
Source reference: /upstream
CVE-2025-39883
Source reference: /upstream
CVE-2025-39898
Source reference: /upstream
CVE-2025-39955
Source reference: /upstream
CVE-2025-40186
Source reference: /upstream

Publisher severity

high

Source reference: /severity/0/score

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2025-38724 · Critical

Linux, Linux

CVE-2025-40186 · High

Linux, Linux

Event: #67785 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 21:15:35 GMT
Publisher date: Mon, 01 Dec 2025 10:04:11 GMT

Read the original announcement