Red Hat Security Advisory: kernel security update

Fixed packages 49

Vulnerabilities 3

• 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-2026-64600 Public exploit

  xfs: resample the data fork mapping after cycling ILOCK

  In the Linux kernel, the following vulnerability has been resolved: xfs: resample the data fork mapping after cycling ILOCK xfs_reflink_fill_{cow_hole,delalloc} are both presented with an inode, a data fork mapping, and a cow fork mapping. Unfortunately, thes…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 23, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482587
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2497033
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2498915
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_41229.json
• report
  https://access.redhat.com/security/cve/CVE-2026-46113
• 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-2026-53359
• 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
• report
  https://access.redhat.com/security/cve/CVE-2026-64600
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-64600
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-64600
• article
  https://cdn2.qualys.com/advisory/2026/07/22/RefluXFS.txt