Red Hat Security Advisory: kernel security update

Fixed packages 158

Vulnerabilities 9

• High 8.8
  CVE-2025-39971

  i40e: fix idx validation in config queues msg

  In the Linux kernel, the following vulnerability has been resolved: i40e: fix idx validation in config queues msg Ensure idx is within range of active/initialized TCs when iterating over vf->ch[idx] in i40e_vc_config_queues_msg().

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Oct 15, 2025
• High 8.8
  CVE-2025-39973

  i40e: add validation for ring_len param

  In the Linux kernel, the following vulnerability has been resolved: i40e: add validation for ring_len param The `ring_len` parameter provided by the virtual function (VF) is assigned directly to the hardware memory context (HMC) without any validation. To add…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Oct 15, 2025
• High 8.8
  CVE-2025-39982

  Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync

  In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync This fixes the following UFA in hci_acl_create_conn_sync where a connection still pending is command submission (conn->state == BT_OP…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Oct 15, 2025
• High 8.8
  CVE-2025-39983

  Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue

  In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue This fixes the following UAF caused by not properly locking hdev when processing HCI_EV_NUM_COMP_PKTS: BUG: KASAN: slab-use-after-free in …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Oct 15, 2025
• 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
  Jul 30, 2025
• 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
  Sep 5, 2025
• 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
  Sep 23, 2025
• High 7.8
  CVE-2025-40047

  io_uring/waitid: always prune wait queue entry in io_waitid_wait()

  In the Linux kernel, the following vulnerability has been resolved: io_uring/waitid: always prune wait queue entry in io_waitid_wait() For a successful return, always remove our entry from the wait queue entry list. Previously this was skipped if a cancelatio…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Oct 28, 2025
• Unscored —
  CVE-2025-38351

  KVM: x86/hyper-v: Skip non-canonical addresses during PV TLB flush

  In the Linux kernel, the following vulnerability has been resolved: KVM: x86/hyper-v: Skip non-canonical addresses during PV TLB flush In KVM guests with Hyper-V hypercalls enabled, the hypercalls HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST and HVCALL_FLUSH_VIRTUAL_ADD…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 19, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2382059
• 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=2397558
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2404100
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2404108
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2404117
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2406758
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_21469.json
• report
  https://access.redhat.com/security/cve/CVE-2025-38351
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38351
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38351
• article
  https://lore.kernel.org/linux-cve-announce/2025071951-CVE-2025-38351-75ea@gregkh/T
• 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-2025-39881
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-39881
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-39881
• article
  https://lore.kernel.org/linux-cve-announce/2025092301-CVE-2025-39881-a4e1@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-39971
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-39971
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-39971
• article
  https://lore.kernel.org/linux-cve-announce/2025101556-CVE-2025-39971-97e2@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-39973
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2404116
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-39973
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-39973
• article
  https://lore.kernel.org/linux-cve-announce/2025101557-CVE-2025-39973-b1a3@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-39982
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-39982
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-39982
• article
  https://lore.kernel.org/linux-cve-announce/2025101559-CVE-2025-39982-a36e@gregkh/T