Skip to content
OpenAdvisories
High RHSA-2025:13590 5 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Aug 12, 2025 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-core 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-core 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-debuginfo 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-devel 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-kvm 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules-extra 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-devel 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-kvm 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules-extra 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-core 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-core 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-debuginfo 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-devel 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules-extra 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-devel 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules 0:4.18.0-553.69.1.rt7.410.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules-extra 0:4.18.0-553.69.1.rt7.410.el8_10

Vulnerabilities 5

  • High 8.8
    CVE-2021-47670

    can: peak_usb: fix use after free bugs

    In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix use after free bugs After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the peak_u…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-21727

    padata: fix UAF in padata_reorder

    In the Linux kernel, the following vulnerability has been resolved: padata: fix UAF in padata_reorder A bug was found when run ltp test: BUG: KASAN: slab-use-after-free in padata_find_next+0x29/0x1a0 Read of size 4 at addr ffff88bbfe003524 by task kworker/u11…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-21759

    ipv6: mcast: extend RCU protection in igmp6_send()

    In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: extend RCU protection in igmp6_send() igmp6_send() can be called without RTNL or RCU being held. Extend RCU protection so that we can safely fetch the net pointer and avoid a pot…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-38085

    mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race

    In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race huge_pmd_unshare() drops a reference on a page table that may have previously been shared across processes, potentially turning it into a n…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2025-38159

    wifi: rtw88: fix the 'para' buffer size to avoid reading out of bounds

    In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: fix the 'para' buffer size to avoid reading out of bounds Set the size to 6 instead of 2, since 'para' array is passed to 'rtw_fw_bt_wifi_control(rtwdev, para[0], &para[1])', whi…

    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=2348516
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2348596
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2360786
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2375304
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2376064
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_13590.json
  • report
    https://access.redhat.com/security/cve/CVE-2021-47670
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2021-47670
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2021-47670
  • article
    https://lore.kernel.org/linux-cve-announce/2025041734-CVE-2021-47670-2b77@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-21727
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-21727
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-21727
  • article
    https://lore.kernel.org/linux-cve-announce/2025022648-CVE-2025-21727-b034@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-21759
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-21759
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-21759
  • article
    https://kernelcve.org/list/?q=CVE-2025-21759
  • article
    https://lore.kernel.org/linux-cve-announce/2025022604-CVE-2025-21759-ad7c@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-38085
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38085
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38085
  • article
    https://lore.kernel.org/linux-cve-announce/2025062836-CVE-2025-38085-8075@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-38159
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38159
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38159
  • article
    https://lore.kernel.org/linux-cve-announce/2025070339-CVE-2025-38159-0c95@gregkh/T