Red Hat Security Advisory: kernel security update

Fixed packages 124

Vulnerabilities 4

• High 8.8
  CVE-2026-46113

  KVM: x86: Fix shadow paging use-after-free due to unexpected GFN

  In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN The shadow MMU computes GFNs for direct shadow pages using sp->gfn plus the SPTE index. This assumption breaks for shadow pagi…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 28, 2026
• High 8.8
  CVE-2026-53359 Public exploit

  KVM: x86: Fix shadow paging use-after-free due to unexpected role

  In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Fix shadow paging use-after-free due to unexpected role Commit 0cb2af2ea66ad ("KVM: x86: Fix shadow paging use-after-free due to unexpected GFN") fixed a shadow paging mismatch betw…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 4, 2026
• High 7.8
  CVE-2026-43074 Public exploit

  eventpoll: defer struct eventpoll free to RCU grace period

  In the Linux kernel, the following vulnerability has been resolved: eventpoll: defer struct eventpoll free to RCU grace period In certain situations, ep_free() in eventpoll.c will kfree the epi->ep eventpoll struct while it still being used by another concurr…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 6, 2026
• High 7.8
  CVE-2026-46242 Public exploit

  eventpoll: fix ep_remove struct eventpoll / struct file UAF

  In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix ep_remove struct eventpoll / struct file UAF ep_remove() (via ep_remove_file()) cleared file->f_ep under file->f_lock but then kept using @file inside the critical section (is_…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 30, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2467019
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2483519
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2497033
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_37729.json
• report
  https://access.redhat.com/security/cve/CVE-2026-43074
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43074
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43074
• article
  https://lore.kernel.org/linux-cve-announce/2026050601-CVE-2026-43074-ac01@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46113
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482587
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46113
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46113
• article
  https://lore.kernel.org/linux-cve-announce/2026052813-CVE-2026-46113-f083@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46242
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46242
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46242
• article
  https://lore.kernel.org/linux-cve-announce/2026053014-CVE-2026-46242-8394@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-53359
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-53359
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-53359
• article
  https://lore.kernel.org/linux-cve-announce/2026070403-CVE-2026-53359-4f57@gregkh/T
• article
  https://www.openwall.com/lists/oss-security/2026/07/06/7