Red Hat Security Advisory: kernel security update

Fixed packages 48

Vulnerabilities 4

• Critical 9.1
  CVE-2025-10263 Public exploit

  Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925, Cortex-X…

  Arm Cortex-X3 Neoverse V3 Cortex-X4 Debian Ubuntu Alpine
  Jun 9, 2026
• High 7.8
  CVE-2026-52923 Public exploit

  ipc: limit next_id allocation to the valid ID range

  In the Linux kernel, the following vulnerability has been resolved: ipc: limit next_id allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids->next_id. ipc_idr_alloc() currently forwards that request t…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jun 24, 2026
• Medium 6.3
  CVE-2026-53059

  dm log: fix out-of-bounds write due to region_count overflow

  In the Linux kernel, the following vulnerability has been resolved: dm log: fix out-of-bounds write due to region_count overflow The local variable region_count in create_log_context() is declared as unsigned int (32-bit), but dm_sector_div_up() returns secto…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jun 24, 2026
• Unscored —
  CVE-2026-31787 Public exploit

  xen/privcmd: fix double free via VMA splitting

  In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: fix double free via VMA splitting privcmd_vm_ops defines .close (privcmd_close), but neither .may_split nor .open. When userspace does a partial munmap() on a privcmd mapping, th…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Apr 30, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2464092
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2486958
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2492094
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2492277
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_47248.json
• report
  https://access.redhat.com/security/cve/CVE-2025-10263
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-10263
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-10263
• article
  https://developer.arm.com/documentation/112137
• report
  https://access.redhat.com/security/cve/CVE-2026-31787
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-31787
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-31787
• article
  https://lore.kernel.org/linux-cve-announce/2026043034-CVE-2026-31787-f6cc@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-52923
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-52923
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-52923
• article
  https://lore.kernel.org/linux-cve-announce/2026062431-CVE-2026-52923-35fb@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-53059
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-53059
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-53059
• article
  https://lore.kernel.org/linux-cve-announce/2026062401-CVE-2026-53059-f32e@gregkh/T