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OpenAdvisories
Critical RHSA-2026:72467 13 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Sep 29, 2026 · Updated Oct 14, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-core 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-core 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-debuginfo 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-devel 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-kvm 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules-extra 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-devel 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-kvm 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules-extra 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-core 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-core 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-debuginfo 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-devel 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules-extra 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-devel 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules 0:4.18.0-553.169.1.rt7.510.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules-extra 0:4.18.0-553.169.1.rt7.510.el8_10

Vulnerabilities 13

  • Critical 9.8
    CVE-2026-68156

    libceph: refresh auth->authorizer_buf{,_len} after authorizer update

    In the Linux kernel, the following vulnerability has been resolved: libceph: refresh auth->authorizer_buf{,_len} after authorizer update ceph_x_create_authorizer() caches au->buf->vec.iov_base and au->buf->vec.iov_len in struct ceph_auth_handshake. These cach…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.8
    CVE-2026-68159

    libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE

    In the Linux kernel, the following vulnerability has been resolved: libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE __decode_pg_temp() decodes an user-controlled length but only rejects values large enough to overflow the allocation; it …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.3
    CVE-2026-64034

    net: mana: Fix TOCTOU double-fetch of hwc_msg_id from DMA buffer

    In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix TOCTOU double-fetch of hwc_msg_id from DMA buffer In mana_hwc_rx_event_handler(), resp->response.hwc_msg_id is read from DMA-coherent memory and bounds-checked, then mana_hwc_h…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-40323

    fbcon: Set fb_display[i]->mode to NULL when the mode is released

    In the Linux kernel, the following vulnerability has been resolved: fbcon: Set fb_display[i]->mode to NULL when the mode is released Recently, we discovered the following issue through syzkaller: BUG: KASAN: slab-use-after-free in fb_mode_is_equal+0x285/0x2f0…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-45942

    ext4: fix e4b bitmap inconsistency reports

    In the Linux kernel, the following vulnerability has been resolved: ext4: fix e4b bitmap inconsistency reports A bitmap inconsistency issue was observed during stress tests under mixed huge-page workloads. Ext4 reported multiple e4b bitmap check failures like…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-63875

    arm64: tlb: Flush walk cache when unsharing PMD tables

    In the Linux kernel, the following vulnerability has been resolved: arm64: tlb: Flush walk cache when unsharing PMD tables When huge_pmd_unshare() is called to unshare a PMD table, the tlb_unshare_pmd_ptdesc() function sets tlb->unshared_tables=true but the a…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-64556

    perf/core: Detach event groups during remove_on_exec

    In the Linux kernel, the following vulnerability has been resolved: perf/core: Detach event groups during remove_on_exec perf_event_remove_on_exec() removes events by calling perf_event_exit_event(). For top-level events, this removes the event from the conte…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-68273

    drm/amdgpu: Fix context pstate override handling

    In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix context pstate override handling There are several problems in the context pstate handling code. The most serious ones are potential use-after-free and NULL pointer dereferenc…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-74753

    perf: Reject exited events as group leaders

    In the Linux kernel, the following vulnerability has been resolved: perf: Reject exited events as group leaders perf_event_remove_on_exec() sets remove-on-exec events to the EXIT state and detaches their group relationships. The event's file descriptor can re…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.5
    CVE-2026-68155

    libceph: Reject monmaps advertising zero monitors

    In the Linux kernel, the following vulnerability has been resolved: libceph: Reject monmaps advertising zero monitors A message of type CEPH_MSG_MON_MAP contains a monmap that is sent from a monitor to the client. This monmap contains information about the ex…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.1
    CVE-2026-46199

    drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg

    In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg Check bounds against the end of the BO whenever we access the msg.

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.1
    CVE-2026-46204

    drm/amdgpu/vcn4: Prevent OOB reads when parsing IB

    In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn4: Prevent OOB reads when parsing IB Rewrite the IB parsing to use amdgpu_ib_get_value() which handles the bounds checks.

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.1
    CVE-2026-46230

    drm/amdgpu/vcn3: Prevent OOB reads when parsing dec msg

    In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn3: Prevent OOB reads when parsing dec msg Check bounds against the end of the BO whenever we access the msg.

    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=2419883
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2482104
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2482533
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2482543
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2482649
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502318
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502394
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2508319
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2513165
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2513232
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2513295
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2513434
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2524434
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_72467.json
  • report
    https://access.redhat.com/security/cve/CVE-2025-40323
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-40323
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-40323
  • article
    https://lore.kernel.org/linux-cve-announce/2025120824-CVE-2025-40323-047f@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-45942
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-45942
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-45942
  • article
    https://lore.kernel.org/linux-cve-announce/2026052729-CVE-2026-45942-fe56@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-46199
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-46199
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-46199
  • article
    https://lore.kernel.org/linux-cve-announce/2026052832-CVE-2026-46199-8adf@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-46204
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-46204
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-46204
  • article
    https://lore.kernel.org/linux-cve-announce/2026052833-CVE-2026-46204-955f@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-46230
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-46230
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-46230
  • article
    https://lore.kernel.org/linux-cve-announce/2026052839-CVE-2026-46230-4948@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-63875
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-63875
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-63875
  • article
    https://lore.kernel.org/linux-cve-announce/2026071935-CVE-2026-63875-97f2@gregkh/T