RHSA-2026:21745
Advisory lineage Upstream: 18 Downstream: 0
Published: 29 May 2026, 10:11
Last modified:04 Jun 2026, 10:07
Vulnerability Summary
Overall Risk (default)
medium
31/100 CVSS Score
7.8 HIGH
3.1 (osv_red_hat)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected
Timeline
29 May 2026, 10:11
Published
Vulnerability first disclosed
04 Jun 2026, 10:07
Last Modified
Vulnerability information updated
Description
Red Hat Security Advisory: kernel-rt security update
CVSS Metrics
- v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Systems
- redhat•kernel-rt
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-core
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-debug
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-debug-core
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-debug-debuginfo
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-debug-devel
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-debug-kvm
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-debug-modules
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-debug-modules-extra
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-debuginfo
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-debuginfo-common-x86_64
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-devel
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-kvm
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-modules
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
- redhat•kernel-rt-modules-extra
< 0:4.18.0-553.126.1.rt7.467.el8_10 | < 0:4.18.0-553.126.1.rt7.467.el8_10
References (93)
- https://access.redhat.com/errata/RHSA-2026:21745
- https://access.redhat.com/security/updates/classification/#important
- https://bugzilla.redhat.com/show_bug.cgi?id=2404105
- https://bugzilla.redhat.com/show_bug.cgi?id=2422699
- https://bugzilla.redhat.com/show_bug.cgi?id=2424879
- https://bugzilla.redhat.com/show_bug.cgi?id=2429602
- https://bugzilla.redhat.com/show_bug.cgi?id=2448594
- https://bugzilla.redhat.com/show_bug.cgi?id=2448745
- https://bugzilla.redhat.com/show_bug.cgi?id=2454810
- https://bugzilla.redhat.com/show_bug.cgi?id=2455334
- https://bugzilla.redhat.com/show_bug.cgi?id=2461107
- https://bugzilla.redhat.com/show_bug.cgi?id=2461757
- https://bugzilla.redhat.com/show_bug.cgi?id=2461759
- https://bugzilla.redhat.com/show_bug.cgi?id=2464369
- https://bugzilla.redhat.com/show_bug.cgi?id=2464455
- https://bugzilla.redhat.com/show_bug.cgi?id=2464462
- https://bugzilla.redhat.com/show_bug.cgi?id=2464476
- https://bugzilla.redhat.com/show_bug.cgi?id=2467059
- https://bugzilla.redhat.com/show_bug.cgi?id=2467064
- https://bugzilla.redhat.com/show_bug.cgi?id=2467210
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_21745.json
- https://access.redhat.com/security/cve/CVE-2025-39981
- https://www.cve.org/CVERecord?id=CVE-2025-39981
- https://nvd.nist.gov/vuln/detail/CVE-2025-39981
- https://lore.kernel.org/linux-cve-announce/2025101559-CVE-2025-39981-fe1d@gregkh/T
- https://access.redhat.com/security/cve/CVE-2025-68183
- https://www.cve.org/CVERecord?id=CVE-2025-68183
- https://nvd.nist.gov/vuln/detail/CVE-2025-68183
- https://lore.kernel.org/linux-cve-announce/2025121632-CVE-2025-68183-f588@gregkh/T
- https://access.redhat.com/security/cve/CVE-2025-68347
- https://www.cve.org/CVERecord?id=CVE-2025-68347
- https://nvd.nist.gov/vuln/detail/CVE-2025-68347
- https://lore.kernel.org/linux-cve-announce/2025122453-CVE-2025-68347-74dd@gregkh/T
- https://access.redhat.com/security/cve/CVE-2025-71116
- https://www.cve.org/CVERecord?id=CVE-2025-71116
- https://nvd.nist.gov/vuln/detail/CVE-2025-71116
- https://lore.kernel.org/linux-cve-announce/2026011414-CVE-2025-71116-e57d@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-23243
- https://www.cve.org/CVERecord?id=CVE-2026-23243
- https://nvd.nist.gov/vuln/detail/CVE-2026-23243
- https://lore.kernel.org/linux-cve-announce/2026031816-CVE-2026-23243-b88e@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-23270
- https://www.cve.org/CVERecord?id=CVE-2026-23270
- https://nvd.nist.gov/vuln/detail/CVE-2026-23270
- https://lore.kernel.org/linux-cve-announce/2026031847-CVE-2026-23270-cb9a@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-23455
- https://www.cve.org/CVERecord?id=CVE-2026-23455
- https://nvd.nist.gov/vuln/detail/CVE-2026-23455
- https://lore.kernel.org/linux-cve-announce/2026040317-CVE-2026-23455-f045@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-31408
- https://www.cve.org/CVERecord?id=CVE-2026-31408
- https://nvd.nist.gov/vuln/detail/CVE-2026-31408
- https://lore.kernel.org/linux-cve-announce/2026040629-CVE-2026-31408-9f0f@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-31532
- https://www.cve.org/CVERecord?id=CVE-2026-31532
- https://nvd.nist.gov/vuln/detail/CVE-2026-31532
- https://lore.kernel.org/linux-cve-announce/2026042349-CVE-2026-31532-a820@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-31684
- https://www.cve.org/CVERecord?id=CVE-2026-31684
- https://nvd.nist.gov/vuln/detail/CVE-2026-31684
- https://lore.kernel.org/linux-cve-announce/2026042545-CVE-2026-31684-6974@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-31685
- https://www.cve.org/CVERecord?id=CVE-2026-31685
- https://nvd.nist.gov/vuln/detail/CVE-2026-31685
- https://lore.kernel.org/linux-cve-announce/2026042545-CVE-2026-31685-3fcc@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-31709
- https://www.cve.org/CVERecord?id=CVE-2026-31709
- https://nvd.nist.gov/vuln/detail/CVE-2026-31709
- https://lore.kernel.org/linux-cve-announce/2026050122-CVE-2026-31709-335b@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-43020
- https://www.cve.org/CVERecord?id=CVE-2026-43020
- https://nvd.nist.gov/vuln/detail/CVE-2026-43020
- https://lore.kernel.org/linux-cve-announce/2026050157-CVE-2026-43020-3561@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-43027
- https://www.cve.org/CVERecord?id=CVE-2026-43027
- https://nvd.nist.gov/vuln/detail/CVE-2026-43027
- https://lore.kernel.org/linux-cve-announce/2026050159-CVE-2026-43027-5711@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-43051
- https://www.cve.org/CVERecord?id=CVE-2026-43051
- https://nvd.nist.gov/vuln/detail/CVE-2026-43051
- https://lore.kernel.org/linux-cve-announce/2026050107-CVE-2026-43051-0d15@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-43158
- https://www.cve.org/CVERecord?id=CVE-2026-43158
- https://nvd.nist.gov/vuln/detail/CVE-2026-43158
- https://lore.kernel.org/linux-cve-announce/2026050631-CVE-2026-43158-cc20@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-43163
- https://www.cve.org/CVERecord?id=CVE-2026-43163
- https://nvd.nist.gov/vuln/detail/CVE-2026-43163
- https://lore.kernel.org/linux-cve-announce/2026050632-CVE-2026-43163-86e1@gregkh/T
- https://access.redhat.com/security/cve/CVE-2026-43190
- https://www.cve.org/CVERecord?id=CVE-2026-43190
- https://nvd.nist.gov/vuln/detail/CVE-2026-43190
- https://lore.kernel.org/linux-cve-announce/2026050642-CVE-2026-43190-f1c9@gregkh/T