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OpenAdvisories
Critical RHSA-2026:93437 7 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Nov 13, 2026 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-core 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-core 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-debuginfo 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-devel 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-kvm 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules-extra 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-devel 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-kvm 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules-extra 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-core 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-core 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-debuginfo 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-devel 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules-extra 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-devel 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules 0:4.18.0-553.181.1.rt7.522.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules-extra 0:4.18.0-553.181.1.rt7.522.el8_10

Vulnerabilities 7

  • Critical 9.8
    CVE-2026-63922

    ipv6: exthdrs: refresh nh after handling HAO option

    In the Linux kernel, the following vulnerability has been resolved: ipv6: exthdrs: refresh nh after handling HAO option ip6_parse_tlv() caches skb_network_header(skb) in nh while walking IPv6 TLVs. ipv6_dest_hao() may call pskb_expand_head() for a cloned skb,…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.8
    CVE-2026-63924

    ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()

    In the Linux kernel, the following vulnerability has been resolved: ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() ipv6_hop_jumbo() calls pskb_trim_rcsum(), which can change skb pointers. Let's recompute nh pointer to make sure any change won't mess…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.8
    CVE-2026-72083

    scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE

    In the Linux kernel, the following vulnerability has been resolved: scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE core_scsi3_emulate_pro_register_and_move() maps the PERSISTENT RESERVE OUT parameter list with transport_kmap_data_sg() …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 8.8
    CVE-2026-64109

    af_unix: Fix UAF read of tail->len in unix_stream_data_wait()

    In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix UAF read of tail->len in unix_stream_data_wait() unix_stream_data_wait() does skb_peek_tail(&sk->sk_receive_queue) without holding any lock that prevents SKBs on that queue from …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 8.1
    CVE-2026-93787

    smb: client: bound dirent name against end of SMB response in cifs_filldir

    In the Linux kernel, the following vulnerability has been resolved: smb: client: bound dirent name against end of SMB response in cifs_filldir cifs_filldir() copies the entry name out of an SMB1 TRANS2_FIND_FIRST / FIND_NEXT response using a length (de.namele…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-74283

    tipc: require net admin for TIPCv2 netlink mutators

    In the Linux kernel, the following vulnerability has been resolved: tipc: require net admin for TIPCv2 netlink mutators TIPCv2 registers mutating generic-netlink operations without admin permission flags. Generic netlink only checks CAP_NET_ADMIN when an oper…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2026-99284

    net: skbuff: propagate shared-frag marker in skb_zerocopy()

    In the Linux kernel, the following vulnerability has been resolved: net: skbuff: propagate shared-frag marker in skb_zerocopy() skb_zerocopy() moves frag descriptors from @from into @to and takes a reference on each frag, but it does not copy skb_shinfo(from)…

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

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502326
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502327
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502615
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2516579
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2516935
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2540555
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2559835
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_93437.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-63922
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-63922
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-63922
  • article
    https://lore.kernel.org/linux-cve-announce/2026071948-CVE-2026-63922-5716@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-63924
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-63924
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-63924
  • article
    https://lore.kernel.org/linux-cve-announce/2026071948-CVE-2026-63924-ec60@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-64109
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-64109
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-64109
  • article
    https://kernelcve.org/list/?q=CVE-2026-64109
  • article
    https://lore.kernel.org/linux-cve-announce/2026071922-CVE-2026-64109-efb0@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-72083
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-72083
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-72083
  • article
    https://lore.kernel.org/linux-cve-announce/2026081521-CVE-2026-72083-e7ac@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-74283
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-74283
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-74283
  • article
    https://lore.kernel.org/linux-cve-announce/2026081546-CVE-2026-74283-7822@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-93787
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-93787
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-93787
  • article
    https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93787.mbox
  • article
    https://kernelcve.org/list/?q=CVE-2026-93787
  • report
    https://access.redhat.com/security/cve/CVE-2026-99284
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2568683
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-99284
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-99284