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OpenAdvisories
High RHSA-2026:6572 4 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Apr 7, 2026 · Updated Sep 11, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-core 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-core 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-debuginfo 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-devel 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-kvm 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules-extra 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-devel 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-kvm 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules-extra 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-core 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-core 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-debuginfo 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-devel 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules-extra 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-devel 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules 0:4.18.0-553.117.1.rt7.458.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules-extra 0:4.18.0-553.117.1.rt7.458.el8_10

Vulnerabilities 4

  • High 8.8
    CVE-2026-23193

    scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()

    In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() In iscsit_dec_session_usage_count(), the function calls complete() while holding the sess->session_usage_lock. Simi…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-23231 Public exploit

    netfilter: nf_tables: fix use-after-free in nf_tables_addchain()

    In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix use-after-free in nf_tables_addchain() nf_tables_addchain() publishes the chain to table->chains via list_add_tail_rcu() (in nft_chain_add()) before registering hook…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Medium 5.5
    CVE-2024-26984

    nouveau: fix instmem race condition around ptr stores

    In the Linux kernel, the following vulnerability has been resolved: nouveau: fix instmem race condition around ptr stores Running a lot of VK CTS in parallel against nouveau, once every few hours you might see something like this crash. BUG: kernel NULL point…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2025-71238

    scsi: qla2xxx: Fix bsg_done() causing double free

    In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix bsg_done() causing double free Kernel panic observed on system, [5353358.825191] BUG: unable to handle page fault for address: ff5f5e897b024000 [5353358.825194] #PF: superv…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • article
    https://access.redhat.com/security/updates/classification/#moderate
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2278333
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2439887
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2444376
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2444398
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_6572.json
  • report
    https://access.redhat.com/security/cve/CVE-2024-26984
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2024-26984
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2024-26984
  • article
    https://lore.kernel.org/linux-cve-announce/2024050142-CVE-2024-26984-3028@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-71238
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-71238
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-71238
  • article
    https://lore.kernel.org/linux-cve-announce/2026030437-CVE-2025-71238-76bc@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-23193
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-23193
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-23193
  • article
    https://lore.kernel.org/linux-cve-announce/2026021434-CVE-2026-23193-2c6c@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-23231
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-23231
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-23231
  • article
    https://lore.kernel.org/linux-cve-announce/2026030436-CVE-2026-23231-1a96@gregkh/T