RHSA-2026:21209

Description

Red Hat Security Advisory: kernel security update

CVSS Metrics

• v3.1•HIGH•Score: 7.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

Affected Systems

• redhat•bpftool

  < 0:7.3.0-427.127.1.el9_4 | < 0:7.3.0-427.127.1.el9_4 | < 0:7.3.0-427.127.1.el9_4 | < 0:7.3.0-427.127.1.el9_4 | < 0:7.3.0-427.127.1.el9_4

• redhat•bpftool-debuginfo

  < 0:7.3.0-427.127.1.el9_4 | < 0:7.3.0-427.127.1.el9_4 | < 0:7.3.0-427.127.1.el9_4 | < 0:7.3.0-427.127.1.el9_4 | < 0:7.3.0-427.127.1.el9_4

• redhat•kernel

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-core

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-debug

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-debug-core

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-debug-debuginfo

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-debug-devel

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-debug-devel-matched

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-debug-modules

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-debug-modules-core

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-debug-modules-extra

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-debuginfo

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-devel

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-devel-matched

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-modules

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-modules-core

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-64k-modules-extra

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-abi-stablelists

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-core

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debug

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debug-core

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debug-debuginfo

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debug-devel

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debug-devel-matched

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debug-modules

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debug-modules-core

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debug-modules-extra

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debug-uki-virt

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debuginfo

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debuginfo-common-aarch64

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debuginfo-common-ppc64le

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debuginfo-common-s390x

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-debuginfo-common-x86_64

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-devel

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-devel-matched

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-doc

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-modules

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-modules-core

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-modules-extra

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-rt

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-rt-core

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-rt-debug

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-rt-debug-core

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-rt-debug-debuginfo

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-rt-debug-devel

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-rt-debug-kvm

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-rt-debug-modules

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

• redhat•kernel-rt-debug-modules-core

  < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4 | < 0:5.14.0-427.127.1.el9_4

Showing first 50 affected entries in server-rendered view.

References (48)

• https://access.redhat.com/errata/RHSA-2026:21209
• https://access.redhat.com/security/updates/classification/#important
• https://bugzilla.redhat.com/show_bug.cgi?id=2357134
• https://bugzilla.redhat.com/show_bug.cgi?id=2390372
• https://bugzilla.redhat.com/show_bug.cgi?id=2394648
• https://bugzilla.redhat.com/show_bug.cgi?id=2424881
• https://bugzilla.redhat.com/show_bug.cgi?id=2425046
• 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=2457829
• https://bugzilla.redhat.com/show_bug.cgi?id=2467059
• https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_21209.json
• https://access.redhat.com/security/cve/CVE-2025-21999
• https://www.cve.org/CVERecord?id=CVE-2025-21999
• https://nvd.nist.gov/vuln/detail/CVE-2025-21999
• https://lore.kernel.org/linux-cve-announce/2025040348-CVE-2025-21999-bc57@gregkh/T
• https://access.redhat.com/security/cve/CVE-2025-38653
• https://www.cve.org/CVERecord?id=CVE-2025-38653
• https://nvd.nist.gov/vuln/detail/CVE-2025-38653
• https://lore.kernel.org/linux-cve-announce/2025082238-CVE-2025-38653-35ba@gregkh/T
• https://access.redhat.com/security/cve/CVE-2025-39766
• https://www.cve.org/CVERecord?id=CVE-2025-39766
• https://nvd.nist.gov/vuln/detail/CVE-2025-39766
• https://lore.kernel.org/linux-cve-announce/2025091144-CVE-2025-39766-7465@gregkh/T
• https://access.redhat.com/security/cve/CVE-2025-68366
• https://www.cve.org/CVERecord?id=CVE-2025-68366
• https://nvd.nist.gov/vuln/detail/CVE-2025-68366
• https://lore.kernel.org/linux-cve-announce/2025122459-CVE-2025-68366-b367@gregkh/T
• https://access.redhat.com/security/cve/CVE-2025-68741
• https://www.cve.org/CVERecord?id=CVE-2025-68741
• https://nvd.nist.gov/vuln/detail/CVE-2025-68741
• https://lore.kernel.org/linux-cve-announce/2025122415-CVE-2025-68741-894a@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-2026-31419
• https://www.cve.org/CVERecord?id=CVE-2026-31419
• https://nvd.nist.gov/vuln/detail/CVE-2026-31419
• https://lore.kernel.org/linux-cve-announce/2026041353-CVE-2026-31419-e176@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