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RHSA-2026:1148
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Source
https://access.redhat.com/errata/RHSA-2026:1148
Import Source
https://security.access.redhat.com/data/osv/RHSA-2026:1148.json
JSON Data
https://api.osv.dev/v1/vulns/RHSA-2026:1148
Upstream
CVE-2023-53673
CVE-2025-40154
CVE-2025-40248
CVE-2025-40277
Published
2026-01-26T10:03:26Z
Modified
2026-01-29T10:57:59.900602Z
Severity
7.8 (High)
CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Calculator
Summary
Red Hat Security Advisory: kernel-rt security update
Details
References
https://access.redhat.com/errata/RHSA-2026:1148
https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2402193
https://bugzilla.redhat.com/show_bug.cgi?id=2414494
https://bugzilla.redhat.com/show_bug.cgi?id=2418872
https://bugzilla.redhat.com/show_bug.cgi?id=2419954
https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_1148.json
https://access.redhat.com/security/cve/CVE-2023-53673
https://www.cve.org/CVERecord?id=CVE-2023-53673
https://nvd.nist.gov/vuln/detail/CVE-2023-53673
https://lore.kernel.org/linux-cve-announce/2025100706-CVE-2023-53673-36b9@gregkh/T
https://access.redhat.com/security/cve/CVE-2025-40154
https://www.cve.org/CVERecord?id=CVE-2025-40154
https://nvd.nist.gov/vuln/detail/CVE-2025-40154
https://lore.kernel.org/linux-cve-announce/2025111258-CVE-2025-40154-fd98@gregkh/T
https://access.redhat.com/security/cve/CVE-2025-40248
https://www.cve.org/CVERecord?id=CVE-2025-40248
https://nvd.nist.gov/vuln/detail/CVE-2025-40248
https://lore.kernel.org/linux-cve-announce/2025120430-CVE-2025-40248-506e@gregkh/T
https://access.redhat.com/security/cve/CVE-2025-40277
https://www.cve.org/CVERecord?id=CVE-2025-40277
https://nvd.nist.gov/vuln/detail/CVE-2025-40277
https://lore.kernel.org/linux-cve-announce/2025120717-CVE-2025-40277-d511@gregkh/T
Affected packages
Red Hat:enterprise_linux:8::nfv
kernel-rt
Package
Name
kernel-rt
Purl
pkg:rpm/redhat/kernel-rt
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-core
Package
Name
kernel-rt-core
Purl
pkg:rpm/redhat/kernel-rt-core
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug
Package
Name
kernel-rt-debug
Purl
pkg:rpm/redhat/kernel-rt-debug
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-core
Package
Name
kernel-rt-debug-core
Purl
pkg:rpm/redhat/kernel-rt-debug-core
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-debuginfo
Package
Name
kernel-rt-debug-debuginfo
Purl
pkg:rpm/redhat/kernel-rt-debug-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-devel
Package
Name
kernel-rt-debug-devel
Purl
pkg:rpm/redhat/kernel-rt-debug-devel
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-kvm
Package
Name
kernel-rt-debug-kvm
Purl
pkg:rpm/redhat/kernel-rt-debug-kvm
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-modules
Package
Name
kernel-rt-debug-modules
Purl
pkg:rpm/redhat/kernel-rt-debug-modules
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-modules-extra
Package
Name
kernel-rt-debug-modules-extra
Purl
pkg:rpm/redhat/kernel-rt-debug-modules-extra
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debuginfo
Package
Name
kernel-rt-debuginfo
Purl
pkg:rpm/redhat/kernel-rt-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debuginfo-common-x86_64
Package
Name
kernel-rt-debuginfo-common-x86_64
Purl
pkg:rpm/redhat/kernel-rt-debuginfo-common-x86_64
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-devel
Package
Name
kernel-rt-devel
Purl
pkg:rpm/redhat/kernel-rt-devel
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-kvm
Package
Name
kernel-rt-kvm
Purl
pkg:rpm/redhat/kernel-rt-kvm
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-modules
Package
Name
kernel-rt-modules
Purl
pkg:rpm/redhat/kernel-rt-modules
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-modules-extra
Package
Name
kernel-rt-modules-extra
Purl
pkg:rpm/redhat/kernel-rt-modules-extra
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
Red Hat:enterprise_linux:8::realtime
kernel-rt
Package
Name
kernel-rt
Purl
pkg:rpm/redhat/kernel-rt
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-core
Package
Name
kernel-rt-core
Purl
pkg:rpm/redhat/kernel-rt-core
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug
Package
Name
kernel-rt-debug
Purl
pkg:rpm/redhat/kernel-rt-debug
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-core
Package
Name
kernel-rt-debug-core
Purl
pkg:rpm/redhat/kernel-rt-debug-core
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-debuginfo
Package
Name
kernel-rt-debug-debuginfo
Purl
pkg:rpm/redhat/kernel-rt-debug-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-devel
Package
Name
kernel-rt-debug-devel
Purl
pkg:rpm/redhat/kernel-rt-debug-devel
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-kvm
Package
Name
kernel-rt-debug-kvm
Purl
pkg:rpm/redhat/kernel-rt-debug-kvm
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-modules
Package
Name
kernel-rt-debug-modules
Purl
pkg:rpm/redhat/kernel-rt-debug-modules
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debug-modules-extra
Package
Name
kernel-rt-debug-modules-extra
Purl
pkg:rpm/redhat/kernel-rt-debug-modules-extra
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debuginfo
Package
Name
kernel-rt-debuginfo
Purl
pkg:rpm/redhat/kernel-rt-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-debuginfo-common-x86_64
Package
Name
kernel-rt-debuginfo-common-x86_64
Purl
pkg:rpm/redhat/kernel-rt-debuginfo-common-x86_64
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-devel
Package
Name
kernel-rt-devel
Purl
pkg:rpm/redhat/kernel-rt-devel
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-kvm
Package
Name
kernel-rt-kvm
Purl
pkg:rpm/redhat/kernel-rt-kvm
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-modules
Package
Name
kernel-rt-modules
Purl
pkg:rpm/redhat/kernel-rt-modules
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
kernel-rt-modules-extra
Package
Name
kernel-rt-modules-extra
Purl
pkg:rpm/redhat/kernel-rt-modules-extra
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-553.97.1.rt7.438.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:1148.json"
RHSA-2026:1148 - OSV