Red Hat Security Advisory: kernel security update

Fixed packages 49

Vulnerabilities 7

• Critical 9.8
  CVE-2026-46135

  nvmet-tcp: fix race between ICReq handling and queue teardown

  In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: fix race between ICReq handling and queue teardown nvmet_tcp_handle_icreq() updates queue->state after sending an Initialization Connection Response (ICResp), but it does so withou…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 28, 2026
• High 8.8
  CVE-2026-64561 Public exploit

  KVM: x86: Check for invalid/obsolete root *after* making MMU pages available

  In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Check for invalid/obsolete root *after* making MMU pages available Check for a "stale" page fault, i.e. for an invalid and/or obsolete root, after making MMU pages available for the…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Aug 4, 2026
• High 8.8
  CVE-2026-64562

  KVM: nVMX: Hide shadow VMCS right after VMCLEAR

  In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Hide shadow VMCS right after VMCLEAR free_nested() frees the shadow VMCS while vmcs01 still points to it. But because it is asynchronous with respect to loaded_vmcs_clear(), the vC…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Aug 4, 2026
• High 7.9
  CVE-2025-40026

  KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O

  In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O When completing emulation of instruction that generated a userspace exit for I/O, don't recheck L1 intercepts as KVM has …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Oct 28, 2025
• High 7.8
  CVE-2026-31488

  drm/amd/display: Do not skip unrelated mode changes in DSC validation

  In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Do not skip unrelated mode changes in DSC validation Starting with commit 17ce8a6907f7 ("drm/amd/display: Add dsc pre-validation in atomic check"), amdgpu resets the CRTC sta…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Apr 22, 2026
• High 7.8
  CVE-2026-46116

  xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete

  In the Linux kernel, the following vulnerability has been resolved: xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete KASAN reproduces a slab-use-after-free in __xfrm_state_delete()'s hlist_del_rcu calls under syzkaller load on linux-6.12.y sta…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 28, 2026
• Unscored —
  CVE-2026-31684

  net: sched: act_csum: validate nested VLAN headers

  In the Linux kernel, the following vulnerability has been resolved: net: sched: act_csum: validate nested VLAN headers tcf_csum_act() walks nested VLAN headers directly from skb->data when an skb still carries in-payload VLAN tags. The current code reads vlan…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Apr 25, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2406712
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2460619
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2461757
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482523
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482654
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_47869.json
• report
  https://access.redhat.com/security/cve/CVE-2025-40026
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-40026
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-40026
• article
  https://lore.kernel.org/linux-cve-announce/2025102841-CVE-2025-40026-760b@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-31488
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-31488
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-31488
• article
  https://lore.kernel.org/linux-cve-announce/2026042200-CVE-2026-31488-fe04@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-31684
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-31684
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-31684
• article
  https://lore.kernel.org/linux-cve-announce/2026042545-CVE-2026-31684-6974@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46116
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46116
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46116
• article
  https://lore.kernel.org/linux-cve-announce/2026052814-CVE-2026-46116-73b8@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46135
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46135
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46135
• article
  https://lore.kernel.org/linux-cve-announce/2026052818-CVE-2026-46135-6f53@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-64561
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2510891
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-64561
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-64561
• article
  https://lore.kernel.org/linux-cve-announce/2026080401-CVE-2026-64561-d0d4@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-64562
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2510894
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-64562
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-64562
• article
  https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-64562.mbox