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

Fixed packages 71

Vulnerabilities 4

• 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
• 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
• 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=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=2482636
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_47739.json
• 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-2026-46209
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46209
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46209
• article
  https://lore.kernel.org/linux-cve-announce/2026052834-CVE-2026-46209-e4e9@gregkh/T