Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Fixed packages 91

Vulnerabilities 8

• Critical 9.1
  CVE-2025-71116

  libceph: make decode_pool() more resilient against corrupted osdmaps

  In the Linux kernel, the following vulnerability has been resolved: libceph: make decode_pool() more resilient against corrupted osdmaps If the osdmap is (maliciously) corrupted such that the encoded length of ceph_pg_pool envelope is less than what is expect…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jan 14, 2026
• High 8.8
  CVE-2026-43112

  fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath

  In the Linux kernel, the following vulnerability has been resolved: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath When cifs_sanitize_prepath is called with an empty string or a string containing only delimiters (e.g., "/"), the current logic …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 6, 2026
• High 8.1
  CVE-2026-31613

  smb: client: fix OOB reads parsing symlink error response

  In the Linux kernel, the following vulnerability has been resolved: smb: client: fix OOB reads parsing symlink error response When a CREATE returns STATUS_STOPPED_ON_SYMLINK, smb2_check_message() returns success without any length validation, leaving the syml…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Apr 24, 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
• High 7.8
  CVE-2026-52976

  drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl()

  In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl() Two error handling issues exist in xe_exec_queue_create_ioctl(): 1. When xe_hw_engine_group_add_exec_queue() fails, the error path ju…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jun 24, 2026
• High 7.5
  CVE-2026-22990

  libceph: replace overzealous BUG_ON in osdmap_apply_incremental()

  In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() If the osdmap is (maliciously) corrupted such that the incremental osdmap epoch is different from what is expected, there is …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jan 23, 2026
• High 7.1
  CVE-2026-46054

  selinux: fix overlayfs mmap() and mprotect() access checks

  In the Linux kernel, the following vulnerability has been resolved: selinux: fix overlayfs mmap() and mprotect() access checks The existing SELinux security model for overlayfs is to allow access if the current task is able to access the top level file (the "…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 27, 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=2429602
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2432400
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2461480
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2464092
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2467015
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482025
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2492094
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2492284
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_52764.json
• report
  https://access.redhat.com/security/cve/CVE-2025-71116
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-71116
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-71116
• article
  https://lore.kernel.org/linux-cve-announce/2026011414-CVE-2025-71116-e57d@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-22990
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-22990
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-22990
• article
  https://lore.kernel.org/linux-cve-announce/2026012351-CVE-2026-22990-a62e@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-31613
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-31613
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-31613
• article
  https://lore.kernel.org/linux-cve-announce/2026042422-CVE-2026-31613-b061@gregkh/T
• 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-2026-43112
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43112
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43112
• article
  https://lore.kernel.org/linux-cve-announce/2026050625-CVE-2026-43112-f37f@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46054
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46054
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46054
• article
  https://lore.kernel.org/linux-cve-announce/2026052754-CVE-2026-46054-b185@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-2026-52976