Red Hat Security Advisory: kernel security update

Fixed packages 158

Vulnerabilities 5

• Critical 9.8
  CVE-2025-68285

  libceph: fix potential use-after-free in have_mon_and_osd_map()

  In the Linux kernel, the following vulnerability has been resolved: libceph: fix potential use-after-free in have_mon_and_osd_map() The wait loop in __ceph_open_session() can race with the client receiving a new monmap or osdmap shortly after the initial map …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Dec 16, 2025
• Critical 9.4
  CVE-2025-39933

  smb: client: let recv_done verify data_offset, data_length and remaining_data_length

  In the Linux kernel, the following vulnerability has been resolved: smb: client: let recv_done verify data_offset, data_length and remaining_data_length This is inspired by the related server fixes.

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Oct 4, 2025
• High 7.8
  CVE-2025-38703

  drm/xe: Make dma-fences compliant with the safe access rules

  In the Linux kernel, the following vulnerability has been resolved: drm/xe: Make dma-fences compliant with the safe access rules Xe can free some of the data pointed to by the dma-fences it exports. Most notably the timeline name can get freed if userspace cl…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Sep 4, 2025
• High 7.8
  CVE-2025-40277

  drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE

  In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE This data originates from userspace and is used in buffer offset calculations which could potentially overflow causing a…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Dec 6, 2025
• Unscored —
  CVE-2025-68287

  usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths

  In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths This patch addresses a race condition caused by unsynchronized execution of multiple call paths invoking `dw…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Dec 16, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2393157
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2401432
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2419954
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2422788
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2422801
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_0793.json
• report
  https://access.redhat.com/security/cve/CVE-2025-38703
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38703
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38703
• article
  https://lore.kernel.org/linux-cve-announce/2025090453-CVE-2025-38703-2f5c@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-39933
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-39933
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-39933
• article
  https://lore.kernel.org/linux-cve-announce/2025100417-CVE-2025-39933-e224@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-40277
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-40277
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-40277
• article
  https://lore.kernel.org/linux-cve-announce/2025120717-CVE-2025-40277-d511@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-68285
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-68285
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-68285
• article
  https://lore.kernel.org/linux-cve-announce/2025121638-CVE-2025-68285-8339@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-68287
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-68287
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-68287
• article
  https://lore.kernel.org/linux-cve-announce/2025121638-CVE-2025-68287-5647@gregkh/T