Skip to content
OpenAdvisories
High RHSA-2026:7100 5 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Apr 9, 2026 · Updated Aug 22, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-core 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-core 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-debuginfo 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-devel 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-kvm 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-modules 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-modules-extra 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debuginfo 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debuginfo-common-x86_64 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-devel 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-kvm 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-modules 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-modules-extra 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-core 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-core 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-debuginfo 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-devel 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-modules 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-modules-extra 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debuginfo 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debuginfo-common-x86_64 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-devel 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-modules 0:5.14.0-70.173.1.rt21.245.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-modules-extra 0:5.14.0-70.173.1.rt21.245.el9_0

Vulnerabilities 5

  • High 7.8
    CVE-2025-38154

    bpf, sockmap: Avoid using sk_socket after free when sending

    In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Avoid using sk_socket after free when sending The sk->sk_socket is not locked or referenced in backlog thread, and during the call to skb_send_sock(), there is a race condition …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-38180

    net: atm: fix /proc/net/atm/lec handling

    In the Linux kernel, the following vulnerability has been resolved: net: atm: fix /proc/net/atm/lec handling /proc/net/atm/lec must ensure safety against dev_lec[] changes. It appears it had dev_put() calls without prior dev_hold(), leading to imbalance and U…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-38206

    exfat: fix double free in delayed_free

    In the Linux kernel, the following vulnerability has been resolved: exfat: fix double free in delayed_free The double free could happen in the following path. exfat_create_upcase_table() exfat_create_upcase_table() : return error exfat_free_upcase_table() : f…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-38248 Public exploit

    bridge: mcast: Fix use-after-free during router port configuration

    In the Linux kernel, the following vulnerability has been resolved: bridge: mcast: Fix use-after-free during router port configuration The bridge maintains a global list of ports behind which a multicast router resides. The list is consulted during forwarding…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-23209

    macvlan: fix error recovery in macvlan_common_newlink()

    In the Linux kernel, the following vulnerability has been resolved: macvlan: fix error recovery in macvlan_common_newlink() valis provided a nice repro to crash the kernel: ip link add p1 type veth peer p2 ip link set address 00:00:00:00:00:20 dev p1 ip link …

    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=2376056
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2376376
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2376377
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2378981
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2439900
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7100.json
  • report
    https://access.redhat.com/security/cve/CVE-2025-38154
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38154
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38154
  • article
    https://lore.kernel.org/linux-cve-announce/2025070337-CVE-2025-38154-8353@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-38180
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38180
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38180
  • article
    https://lore.kernel.org/linux-cve-announce/2025070410-CVE-2025-38180-c6d0@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-38206
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38206
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38206
  • article
    https://lore.kernel.org/linux-cve-announce/2025070420-CVE-2025-38206-a077@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-38248
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38248
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38248
  • article
    https://lore.kernel.org/linux-cve-announce/2025070934-CVE-2025-38248-003c@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-23209
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-23209
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-23209
  • article
    https://lore.kernel.org/linux-cve-announce/2026021439-CVE-2026-23209-9ad6@gregkh/T