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OpenAdvisories
High RHSA-2025:22087 9 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Nov 26, 2025 · Updated Aug 20, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-core 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-core 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-debuginfo 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-devel 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-kvm 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-modules 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-modules-extra 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debuginfo 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debuginfo-common-x86_64 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-devel 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-kvm 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-modules 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-modules-extra 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-core 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-core 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-debuginfo 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-devel 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-modules 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-modules-extra 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debuginfo 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debuginfo-common-x86_64 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-devel 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-modules 0:5.14.0-70.155.1.rt21.227.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-modules-extra 0:5.14.0-70.155.1.rt21.227.el9_0

Vulnerabilities 9

  • High 8.8
    CVE-2023-53297

    Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp

    In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp conn->chan_lock isn't acquired before l2cap_get_chan_by_scid, if l2cap_get_chan_by_scid returns NULL, then 'bad unlock balan…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2022-50341

    cifs: fix oops during encryption

    In the Linux kernel, the following vulnerability has been resolved: cifs: fix oops during encryption When running xfstests against Azure the following oops occurred on an arm64 system Unable to handle kernel write to read-only memory at virtual address ffff00…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.1
    CVE-2025-39817

    efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare

    In the Linux kernel, the following vulnerability has been resolved: efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare Observed on kernel 6.6 (present on master as well): BUG: KASAN: slab-out-of-bounds in memcmp+0x98/0xd0 Call trace: kasan_check_range+0xe…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Medium 5.5
    CVE-2023-53365

    ip6mr: Fix skb_under_panic in ip6mr_cache_report()

    In the Linux kernel, the following vulnerability has been resolved: ip6mr: Fix skb_under_panic in ip6mr_cache_report() skbuff: skb_under_panic: text:ffffffff88771f69 len:56 put:-4 head:ffff88805f86a800 data:ffff887f5f86a850 tail:0x88 end:0x2c0 dev:pim6reg ---…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Medium 5.5
    CVE-2023-53393

    RDMA/mlx5: Fix mlx5_ib_get_hw_stats when used for device

    In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix mlx5_ib_get_hw_stats when used for device Currently, when mlx5_ib_get_hw_stats() is used for device (port_num = 0), there is a special handling in order to use the correct coun…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2022-50403 Rejected

    This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

    linux-raspi2 linux-hwe linux-azure linux-riscv Ubuntu
  • Unscored —
    CVE-2025-38729

    ALSA: usb-audio: Validate UAC3 power domain descriptors, too

    In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Validate UAC3 power domain descriptors, too UAC3 power domain descriptors need to be verified with its variable bLength for avoiding the unexpected OOB accesses by malicious …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2025-39757

    ALSA: usb-audio: Validate UAC3 cluster segment descriptors

    In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Validate UAC3 cluster segment descriptors UAC3 class segment descriptors need to be verified whether their sizes match with the declared lengths and whether they fit with the…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2025-40300

    x86/vmscape: Add conditional IBPB mitigation

    In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor (like QEMU). Existing …

    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=2393164
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2394615
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2394627
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395681
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395805
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395879
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2396130
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2396376
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2396494
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_22087.json
  • report
    https://access.redhat.com/security/cve/CVE-2022-50341
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2022-50341
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2022-50341
  • article
    https://lore.kernel.org/linux-cve-announce/2025091638-CVE-2022-50341-12c1@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2022-50403
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2022-50403
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2022-50403
  • article
    https://lore.kernel.org/linux-cve-announce/2025091852-CVE-2022-50403-0471@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2023-53297
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53297
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53297
  • article
    https://lore.kernel.org/linux-cve-announce/2025091627-CVE-2023-53297-8746@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2023-53365
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53365
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53365
  • article
    https://lore.kernel.org/linux-cve-announce/2025091723-CVE-2023-53365-acb1@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2023-53393
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53393
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53393
  • article
    https://lore.kernel.org/linux-cve-announce/2025091858-CVE-2023-53393-5e45@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-38729
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38729
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38729
  • article
    https://lore.kernel.org/linux-cve-announce/2025090403-CVE-2025-38729-ca88@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-39757
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-39757
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-39757
  • article
    https://lore.kernel.org/linux-cve-announce/2025091144-CVE-2025-39757-e212@gregkh/T