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OpenAdvisories
Critical RHSA-2025:23463 14 CVEs

Red Hat Security Advisory: kernel security update

Published Dec 18, 2025 · Updated Oct 2, 2026

Ecosystem: Red Hat

Fixed packages 48

ReleasePackageFixed in
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos bpftool 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos bpftool-debuginfo 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-abi-stablelists 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-core 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-debug 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-debug-core 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-debug-debuginfo 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-debug-devel 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-debug-modules 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-debug-modules-extra 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-debuginfo 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-debuginfo-common-x86_64 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-devel 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-doc 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-modules 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-modules-extra 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-tools 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-tools-debuginfo 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos kernel-tools-libs 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos perf 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos perf-debuginfo 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos python3-perf 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::baseos python3-perf-debuginfo 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos bpftool 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos bpftool-debuginfo 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-abi-stablelists 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-core 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-debug 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-debug-core 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-debug-debuginfo 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-debug-devel 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-debug-modules 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-debug-modules-extra 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-debuginfo 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-debuginfo-common-x86_64 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-devel 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-doc 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-modules 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-modules-extra 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-tools 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-tools-debuginfo 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos kernel-tools-libs 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos perf 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos perf-debuginfo 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos python3-perf 0:4.18.0-305.182.1.el8_4
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::baseos python3-perf-debuginfo 0:4.18.0-305.182.1.el8_4

Vulnerabilities 14

  • Critical 9.8
    CVE-2025-38724

    nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm()

    In the Linux kernel, the following vulnerability has been resolved: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() Lei Lu recently reported that nfsd4_setclientid_confirm() did not check the return value from get_client_locked(). a SE…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.8
    CVE-2025-39841

    scsi: lpfc: Fix buffer free/clear order in deferred receive path

    In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix buffer free/clear order in deferred receive path Fix a use-after-free window by correcting the buffer release sequence in the deferred receive path. The code freed the RQ buff…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 8.8
    CVE-2023-53226

    wifi: mwifiex: Fix OOB and integer underflow when rx packets

    In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Fix OOB and integer underflow when rx packets Make sure mwifiex_process_mgmt_packet, mwifiex_process_sta_rx_packet and mwifiex_process_uap_rx_packet, mwifiex_uap_queue_bridged_…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • 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 8.8
    CVE-2023-53322

    scsi: qla2xxx: Wait for io return on terminate rport

    In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Wait for io return on terminate rport System crash due to use after free. Current code allows terminate_rport_io to exit before making sure all IOs has returned. For FCP-2 devi…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 8.1
    CVE-2025-40186

    tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request().

    In the Linux kernel, the following vulnerability has been resolved: tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request(). syzbot reported the splat below in tcp_conn_request(). [0] If a listener is close()d while a TFO socket is being processed in tc…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2022-50406

    iomap: iomap: fix memory corruption when recording errors during writeback

    In the Linux kernel, the following vulnerability has been resolved: iomap: iomap: fix memory corruption when recording errors during writeback Every now and then I see this crash on arm64: Unable to handle kernel NULL pointer dereference at virtual address 00…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-38718

    sctp: linearize cloned gso packets in sctp_rcv

    In the Linux kernel, the following vulnerability has been resolved: sctp: linearize cloned gso packets in sctp_rcv A cloned head skb still shares these frag skbs in fraglist with the original head skb. It's not safe to access these frag skbs. syzbot reported …

    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-2024-46679

    ethtool: check device is present when getting link settings

    In the Linux kernel, the following vulnerability has been resolved: ethtool: check device is present when getting link settings A sysfs reader can race with a device reset or removal, attempting to read device state when the device is not actually present. eg…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • 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-2025-39955

    tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect().

    In the Linux kernel, the following vulnerability has been resolved: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect(). syzbot reported the splat below where a socket had tcp_sk(sk)->fastopen_rsk in the TCP_ESTABLISHED state. [0] syzbot reused the server…

    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=2312067
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2393164
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2393166
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2393172
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2394615
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395420
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395681
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395891
  • 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=2396538
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2396944
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2402699
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2414724
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_23463.json
  • report
    https://access.redhat.com/security/cve/CVE-2022-50406
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2022-50406
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2022-50406
  • article
    https://git.kernel.org/stable/c/3d5f3ba1ac28059bdf7000cae2403e4e984308d2
  • article
    https://git.kernel.org/stable/c/7308591d9c7787aec58f6a01a7823f14e90db7a2
  • article
    https://git.kernel.org/stable/c/82c66c46f73b88be74c869e2cbfef45281adf3c6
  • report
    https://access.redhat.com/security/cve/CVE-2023-53226
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53226
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53226
  • article
    https://lore.kernel.org/linux-cve-announce/2025091513-CVE-2023-53226-a44a@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-2023-53322
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53322
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53322
  • article
    https://lore.kernel.org/linux-cve-announce/2025091644-CVE-2023-53322-45ba@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