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OpenAdvisories
High RHSA-2026:78843 1 CVE

Red Hat Security Advisory: kernel-rt security update

Published Oct 10, 2026 · Updated Oct 10, 2026

Ecosystem: Red Hat

Fixed packages 11

ReleasePackageFixed in
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt 0:3.10.0-1160.165.1.rt56.1317.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug 0:3.10.0-1160.165.1.rt56.1317.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug-debuginfo 0:3.10.0-1160.165.1.rt56.1317.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug-devel 0:3.10.0-1160.165.1.rt56.1317.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debuginfo 0:3.10.0-1160.165.1.rt56.1317.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debuginfo-common-x86_64 0:3.10.0-1160.165.1.rt56.1317.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-devel 0:3.10.0-1160.165.1.rt56.1317.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-doc 0:3.10.0-1160.165.1.rt56.1317.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace 0:3.10.0-1160.165.1.rt56.1317.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace-debuginfo 0:3.10.0-1160.165.1.rt56.1317.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace-devel 0:3.10.0-1160.165.1.rt56.1317.el7

Vulnerabilities 1

  • High 7.9
    CVE-2025-40026

    KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O

    In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O When completing emulation of instruction that generated a userspace exit for I/O, don't recheck L1 intercepts as KVM has …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu

References

  • article
    https://access.redhat.com/security/updates/classification/#moderate
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2406712
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_78843.json
  • report
    https://access.redhat.com/security/cve/CVE-2025-40026
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-40026
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-40026
  • article
    https://lore.kernel.org/linux-cve-announce/2025102841-CVE-2025-40026-760b@gregkh/T