Red Hat Security Advisory: kernel security update

Fixed packages 48

Vulnerabilities 9

• 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 8.1
  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-2025-68183

  ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr

  In the Linux kernel, the following vulnerability has been resolved: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr Currently when both IMA and EVM are in fix mode, the IMA signature will be reset to IMA hash if a program first stores …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Dec 16, 2025
• High 7.8
  CVE-2026-43499 Public exploit

  rtmutex: Use waiter::task instead of current in remove_waiter()

  In the Linux kernel, the following vulnerability has been resolved: rtmutex: Use waiter::task instead of current in remove_waiter() remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollback in rt_mutex_start_proxy_lock() when …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 21, 2026
• High 7.8
  CVE-2026-46209

  drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs()

  In the Linux kernel, the following vulnerability has been resolved: drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs() drm_gem_fb_init_with_funcs() computes sub-sampled plane dimensions using plain integer division: unsigned…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 28, 2026
• High 7.0
  CVE-2026-46189

  RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path

  In the Linux kernel, the following vulnerability has been resolved: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path Sashiko points out that pvrdma_uar_free() is already called within pvrdma_dealloc_ucontext(), so calling it before trigg…

  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
• Unscored —
  CVE-2026-43027

  netfilter: nf_conntrack_helper: pass helper to expect cleanup

  In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_helper: pass helper to expect cleanup nf_conntrack_helper_unregister() calls nf_ct_expect_iterate_destroy() to remove expectations belonging to the helper being unregi…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 1, 2026
• Unscored —
  CVE-2026-53166 Rejected

  This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

  linux-raspi2 linux-hwe linux-azure linux-riscv Ubuntu
  Jun 25, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2422699
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2461480
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2461757
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2464369
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2480453
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482588
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482636
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482654
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2492805
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_40068.json
• report
  https://access.redhat.com/security/cve/CVE-2025-68183
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-68183
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-68183
• article
  https://lore.kernel.org/linux-cve-announce/2025121632-CVE-2025-68183-f588@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-2026-31684
• 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-2026-43027
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43027
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43027
• article
  https://lore.kernel.org/linux-cve-announce/2026050159-CVE-2026-43027-5711@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-43499
• article
  https://access.redhat.com/security/vulnerabilities/RHSB-2026-010
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43499
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43499
• article
  https://lore.kernel.org/linux-cve-announce/2026052158-CVE-2026-43499-1294@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-2026-46189
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46189
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46189