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OpenAdvisories
Critical RHSA-2025:17398 2 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Oct 7, 2025 · Updated Jul 30, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-core 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-core 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-debuginfo 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-devel 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-kvm 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules-extra 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-devel 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-kvm 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules-extra 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-core 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-core 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-debuginfo 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-devel 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules-extra 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-devel 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules 0:4.18.0-553.78.1.rt7.419.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules-extra 0:4.18.0-553.78.1.rt7.419.el8_10

Vulnerabilities 2

  • Critical 9.8
    CVE-2025-38527

    smb: client: fix use-after-free in cifs_oplock_break

    In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free in cifs_oplock_break A race condition can occur in cifs_oplock_break() leading to a use-after-free of the cinode structure when unmounting: cifs_oplock_break()…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2025-39730

    NFS: Fix filehandle bounds checking in nfs_fh_to_dentry()

    In the Linux kernel, the following vulnerability has been resolved: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() The function needs to check the minimal filehandle length before it can access the embedded filehandle.

    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=2388928
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2393731
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_17398.json
  • report
    https://access.redhat.com/security/cve/CVE-2025-38527
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38527
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38527
  • article
    https://lore.kernel.org/linux-cve-announce/2025081654-CVE-2025-38527-c389@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-39730
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-39730
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-39730
  • article
    https://lore.kernel.org/linux-cve-announce/2025090730-CVE-2025-39730-72c9@gregkh/T