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Critical RHSA-2025:21118 12 CVEs

Red Hat Security Advisory: kernel security update

Published Nov 13, 2025 · Updated Oct 16, 2026

Ecosystem: Red Hat

Fixed packages 90

ReleasePackageFixed in
Red Hat · RHEL 10 enterprise_linux:10.1 kernel 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-debug 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-debug-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-debug-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-debug-devel 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-debug-devel-matched 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-debug-modules 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-debug-modules-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-debug-modules-extra 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-devel 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-devel-matched 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-modules 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-modules-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-64k-modules-extra 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-abi-stablelists 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debug 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debug-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debug-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debug-devel 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debug-devel-matched 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debug-modules 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debug-modules-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debug-modules-extra 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debug-uki-virt 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debuginfo-common-aarch64 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debuginfo-common-ppc64le 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debuginfo-common-s390x 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-debuginfo-common-x86_64 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-devel 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-devel-matched 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-doc 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-modules 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-modules-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-modules-extra 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-modules-extra-matched 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-debug 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-debug-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-debug-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-debug-devel 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-debug-modules 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-debug-modules-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-debug-modules-extra 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-devel 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-modules 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-modules-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-64k-modules-extra 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-debug 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-debug-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-debug-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-debug-devel 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-debug-modules 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-debug-modules-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-debug-modules-extra 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-devel 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-modules 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-modules-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-rt-modules-extra 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-tools 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-tools-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-tools-libs 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-tools-libs-devel 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-uki-virt 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-uki-virt-addons 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-zfcpdump 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-zfcpdump-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-zfcpdump-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-zfcpdump-devel 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-zfcpdump-devel-matched 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-zfcpdump-modules 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-zfcpdump-modules-core 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 kernel-zfcpdump-modules-extra 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 libperf 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 libperf-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 perf 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 perf-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 python3-perf 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 python3-perf-debuginfo 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 rtla 0:6.12.0-124.9.1.el10_1
Red Hat · RHEL 10 enterprise_linux:10.1 rv 0:6.12.0-124.9.1.el10_1

Vulnerabilities 12

  • Critical 9.8
    CVE-2025-39702

    ipv6: sr: Fix MAC comparison to be constant-time

    In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this.

    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-2025-39849

    wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result()

    In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result() If the ssid->datalen is more than IEEE80211_MAX_SSID_LEN (32) it would lead to memory corruption so add some bounds checkin…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 8.4
    CVE-2025-39718

    vsock/virtio: Validate length in packet header before skb_put()

    In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: Validate length in packet header before skb_put() When receiving a vsock packet in the guest, only the virtqueue buffer size is validated prior to virtio_vsock_skb_rx_put(). Unf…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-38498

    do_change_type(): refuse to operate on unmounted/not ours mounts

    In the Linux kernel, the following vulnerability has been resolved: do_change_type(): refuse to operate on unmounted/not ours mounts Ensure that propagation settings can only be changed for mounts located in the caller's mount namespace. This change aligns pe…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-39697

    NFS: Fix a race when updating an existing write

    In the Linux kernel, the following vulnerability has been resolved: NFS: Fix a race when updating an existing write After nfs_lock_and_join_requests() tests for whether the request is still attached to the mapping, nothing prevents a call to nfs_inode_remove_…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-39881

    kernfs: Fix UAF in polling when open file is released

    In the Linux kernel, the following vulnerability has been resolved: kernfs: Fix UAF in polling when open file is released A use-after-free (UAF) vulnerability was identified in the PSI (Pressure Stall Information) monitoring mechanism: BUG: KASAN: slab-use-af…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • 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
  • Unscored —
    CVE-2025-39727

    mm: swap: fix potential buffer overflow in setup_clusters()

    In the Linux kernel, the following vulnerability has been resolved: mm: swap: fix potential buffer overflow in setup_clusters() In setup_swap_map(), we only ensure badpages are in range (0, last_page]. As maxpages might be < last_page, setup_clusters() will e…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2025-39751 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-2025-39757

    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=2384422
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2393481
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2393507
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2393533
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2393733
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2394615
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2394624
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2394627
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395805
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2396928
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2396944
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2397558
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_21118.json
  • report
    https://access.redhat.com/security/cve/CVE-2025-38498
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38498
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38498
  • article
    https://lore.kernel.org/linux-cve-announce/2025073029-CVE-2025-38498-e3ab@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-39697
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-39697
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-39697
  • article
    https://lore.kernel.org/linux-cve-announce/2025090548-CVE-2025-39697-5284@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-39702
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-39702
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-39702
  • article
    https://lore.kernel.org/linux-cve-announce/2025090548-CVE-2025-39702-cb30@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-39718
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-39718
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-39718
  • article
    https://lore.kernel.org/linux-cve-announce/2025090551-CVE-2025-39718-2e2c@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-39727
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-39727
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-39727
  • article
    https://lore.kernel.org/linux-cve-announce/2025090728-CVE-2025-39727-b07c@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-39751
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-39751
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-39751
  • article
    https://lore.kernel.org/linux-cve-announce/2025091142-CVE-2025-39751-c340@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-39757