Red Hat Security Advisory: kernel security update

Fixed packages 142

Vulnerabilities 7

• Critical 9.8
  CVE-2025-38472

  netfilter: nf_conntrack: fix crash due to removal of uninitialised entry

  In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack: fix crash due to removal of uninitialised entry A crash in conntrack was reported while trying to unlink the conntrack entry from the hash bucket list: [exception RIP…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 28, 2025
• Critical 9.8
  CVE-2025-38527

  smb: client: fix use-after-free in cifs_oplock_break

  In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free in cifs_oplock_break A race condition can occur in cifs_oplock_break() leading to a use-after-free of the cinode structure when unmounting: cifs_oplock_break()…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Aug 16, 2025
• High 7.8
  CVE-2025-37823

  net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too

  In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too Similarly to the previous patch, we need to safe guard hfsc_dequeue() too. But for this one, we don't have a reliable reproducer.

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 8, 2025
• High 7.8
  CVE-2025-38449

  drm/gem: Acquire references on GEM handles for framebuffers

  In the Linux kernel, the following vulnerability has been resolved: drm/gem: Acquire references on GEM handles for framebuffers A GEM handle can be released while the GEM buffer object is attached to a DRM framebuffer. This leads to the release of the dma-buf…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 25, 2025
• High 7.8
  CVE-2025-38500

  xfrm: interface: fix use-after-free after changing collect_md xfrm interface

  In the Linux kernel, the following vulnerability has been resolved: xfrm: interface: fix use-after-free after changing collect_md xfrm interface collect_md property on xfrm interfaces can only be set on device creation, thus xfrmi_changelink() should fail whe…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Aug 12, 2025
• High 7.8
  CVE-2025-39927

  ceph: fix race condition validating r_parent before applying state

  In the Linux kernel, the following vulnerability has been resolved: ceph: fix race condition validating r_parent before applying state Add validation to ensure the cached parent directory inode matches the directory info in MDS replies. This prevents client-s…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Oct 1, 2025
• Unscored —
  CVE-2025-38200

  i40e: fix MMIO write access to an invalid page in i40e_clear_hw

  In the Linux kernel, the following vulnerability has been resolved: i40e: fix MMIO write access to an invalid page in i40e_clear_hw When the device sends a specific input, an integer underflow can occur, leading to MMIO write access to an invalid page. Preven…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 4, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2365024
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2376392
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2383519
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2383916
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2387866
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2388928
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_17241.json
• report
  https://access.redhat.com/security/cve/CVE-2025-37823
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-37823
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-37823
• article
  https://lore.kernel.org/linux-cve-announce/2025050821-CVE-2025-37823-d739@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38200
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38200
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38200
• article
  https://lore.kernel.org/linux-cve-announce/2025070418-CVE-2025-38200-47d9@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38449
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38449
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38449
• article
  https://lore.kernel.org/linux-cve-announce/2025072504-CVE-2025-38449-cbf0@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38472
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38472
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38472
• article
  https://lore.kernel.org/linux-cve-announce/2025072812-CVE-2025-38472-fa6d@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38500
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38500
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38500
• article
  https://lore.kernel.org/linux-cve-announce/2025081245-CVE-2025-38500-7e22@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38527
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38527
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38527
• article
  https://lore.kernel.org/linux-cve-announce/2025081654-CVE-2025-38527-c389@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-39927
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2400636
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-39927
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-39927
• article
  https://lore.kernel.org/linux-cve-announce/2025100125-CVE-2025-39927-5a57@gregkh/T