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OpenAdvisories
Critical RHSA-2026:95721 10 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Nov 13, 2026 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 11

ReleasePackageFixed in
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt 0:3.10.0-1160.169.1.rt56.1321.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug 0:3.10.0-1160.169.1.rt56.1321.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug-debuginfo 0:3.10.0-1160.169.1.rt56.1321.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug-devel 0:3.10.0-1160.169.1.rt56.1321.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debuginfo 0:3.10.0-1160.169.1.rt56.1321.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debuginfo-common-x86_64 0:3.10.0-1160.169.1.rt56.1321.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-devel 0:3.10.0-1160.169.1.rt56.1321.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-doc 0:3.10.0-1160.169.1.rt56.1321.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace 0:3.10.0-1160.169.1.rt56.1321.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace-debuginfo 0:3.10.0-1160.169.1.rt56.1321.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace-devel 0:3.10.0-1160.169.1.rt56.1321.el7

Vulnerabilities 10

  • 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 9.3
    CVE-2026-99999 Public exploit

    ipv4: validate checksum_start before completing checksum

    In the Linux kernel, the following vulnerability has been resolved: ipv4: validate checksum_start before completing checksum If a packet with bad checksum metadata gets into the ipv4 stack, skb_checksum_help can corrupt the network header and cause a bunch of…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 8.8
    CVE-2026-46056

    Bluetooth: hci_event: fix potential UAF in SSP passkey handlers

    In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers hci_conn lookup and field access must be covered by hdev lock in hci_user_passkey_notify_evt() and hci_keypress_notify_evt(), o…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 8.4
    CVE-2026-72243

    selinux: check connect-related permissions on TCP Fast Open

    In the Linux kernel, the following vulnerability has been resolved: selinux: check connect-related permissions on TCP Fast Open Similar to Landlock, SELinux was not updated when TCP Fast Open support was introduced to ensure connect-related permissions are ch…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-46259

    procfs: fix missing RCU protection when reading real_parent in do_task_stat()

    In the Linux kernel, the following vulnerability has been resolved: procfs: fix missing RCU protection when reading real_parent in do_task_stat() When reading /proc/[pid]/stat, do_task_stat() accesses task->real_parent without proper RCU protection, which lea…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-53062

    dm cache policy smq: fix missing locks in invalidating cache blocks

    In the Linux kernel, the following vulnerability has been resolved: dm cache policy smq: fix missing locks in invalidating cache blocks In passthrough mode, the policy invalidate_mapping operation is called simultaneously from multiple workers, thus it should…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.1
    CVE-2026-63920

    ipv6: validate extension header length before copying to cmsg

    In the Linux kernel, the following vulnerability has been resolved: ipv6: validate extension header length before copying to cmsg ip6_datagram_recv_specific_ctl() builds IPV6_{HOPOPTS,DSTOPTS,RTHDR} cmsgs (and their IPV6_2292* legacy counterparts) by trusting…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2026-43450

    netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table()

    In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() nfnl_cthelper_dump_table() has a 'goto restart' that jumps to a label inside the for loop body. When the "last" helpe…

    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=2468228
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2482181
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2484477
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492278
  • 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=2502330
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2516684
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2553429
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2559835
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_95721.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-43450
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-43450
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-43450
  • article
    https://lore.kernel.org/linux-cve-announce/2026050857-CVE-2026-43450-8919@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-46056
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-46056
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-46056
  • article
    https://lore.kernel.org/linux-cve-announce/2026052754-CVE-2026-46056-0ff1@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-46259
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-46259
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-46259
  • article
    https://lore.kernel.org/linux-cve-announce/2026060336-CVE-2026-46259-6c94@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-53062
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-53062
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-53062
  • article
    https://lore.kernel.org/linux-cve-announce/2026062402-CVE-2026-53062-a727@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-63920
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-63920
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-63920
  • article
    https://lore.kernel.org/linux-cve-announce/2026071948-CVE-2026-63920-54a7@gregkh/T
  • 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