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High 1 exploited CVE ELSA-2026-39083 8 CVEs

Important: kernel update (Oracle Linux 8)

Published Jul 14, 2026 · Updated Jul 14, 2026

Ecosystem: Oracle Linux

Summary

[4.18.0-553.143.1]
- Update Oracle Linux certificates (Kevin Lyons)
- Disable signing for aarch64 (Ilya Okomin)
- Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list (olkmod_signing_key.pem) [Orabug: 29539237]
- Update x509.genkey [Orabug: 24817676]
- Conflict with shim-ia32 and shim-x64 <= 15.3-1.0.3
- Remove upstream reference during boot (Kevin Lyons) [Orabug: 34750652]
- Add new Oracle Linux Driver Signing (key 1) certificate [Orabug: 37985772]

[4.18.0-553.143.1]
- locking/rtmutex: Skip remove_waiter() when waiter is not enqueued (Phil Auld) [RHEL-193334] {CVE-2026-53166}
- rtmutex: Use waiter::task instead of current in remove_waiter() (Phil Auld) [RHEL-193143] {CVE-2026-43499}

[4.18.0-553.142.1]
- KVM: x86: Fix shadow paging use-after-free due to unexpected role (Paolo Bonzini) [RHEL-192411] {CVE-2026-53359}
- KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (Aidan Wallace) [RHEL-186618] {CVE-2026-46113}
- KVM: x86/mmu: pull call to drop_large_spte() into __link_shadow_page() (Paolo Bonzini) [RHEL-186618]
- KVM: x86/mmu: Always pass 0 for @quadrant when gptes are 8 bytes (Aidan Wallace) [RHEL-186618]
- KVM: x86/mmu: Derive shadow MMU page role from parent (Aidan Wallace) [RHEL-186618]
- KVM: x86/mmu: Stop passing 'direct' to mmu_alloc_root() (Aidan Wallace) [RHEL-186618]
- KVM: x86/mmu: Use a bool for direct (Aidan Wallace) [RHEL-186618]
- netfilter: bridge: make ebt_snat ARP rewrite writable (CKI Backport Bot) [RHEL-182341]
- net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (CKI Backport Bot) [RHEL-182996] {CVE-2025-71066}
- iommu/vt-d: track SVA mm for kernel page table flush notification (Jerry Snitselaar) [RHEL-150534] {CVE-2025-71089}
- iommu/amd: track SVA mm for kernel page table flush notification (Jerry Snitselaar) [RHEL-150534] {CVE-2025-71089}
- x86/mm: flush IOMMU before freeing kernel page table pages (Jerry Snitselaar) [RHEL-150534] {CVE-2025-71089}
- iommu/sva: add kernel page table IOTLB flush notification (Jerry Snitselaar) [RHEL-150534] {CVE-2025-71089}
- iommu/vt-d: Fix incorrect cache invalidation for mm notification (Jerry Snitselaar) [RHEL-150534] {CVE-2025-71089}
- net: atm: fix crash due to unvalidated vcc pointer in sigd_send() (CKI Backport Bot) [RHEL-167045] {CVE-2026-31411}

Fixed packages 20

ReleasePackageFixed in
Oracle Linux · 8 bpftool 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-abi-stablelists 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-core 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-cross-headers 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-debug 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-debug-core 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-debug-devel 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-debug-modules 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-debug-modules-extra 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-devel 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-doc 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-headers 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-modules 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-modules-extra 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-tools 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-tools-libs 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 kernel-tools-libs-devel 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 perf 0:4.18.0-553.143.1.el8_10
Oracle Linux · 8 python3-perf 0:4.18.0-553.143.1.el8_10

Vulnerabilities 8

  • High 8.8
    CVE-2026-53266 Exploited Public exploit

    netfilter: bridge: make ebt_snat ARP rewrite writable

    In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: make ebt_snat ARP rewrite writable The ebtables SNAT target keeps the Ethernet source address rewrite behind skb_ensure_writable(skb, 0). This is intentional: at the bridge…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
    KEV Sep 18, 2026
  • 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
  • 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
  • High 7.8
    CVE-2025-71066

    net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change

    In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change zdi-disclosures@trendmicro.com says: The vulnerability is a race condition between `ets_qdisc_dequeue`…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-71089

    iommu: disable SVA when CONFIG_X86 is set

    In the Linux kernel, the following vulnerability has been resolved: iommu: disable SVA when CONFIG_X86 is set Patch series "Fix stale IOTLB entries for kernel address space", v7. This proposes a fix for a security vulnerability related to IOMMU Shared Virtual…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • 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
  • Unscored —
    CVE-2026-31411

    net: atm: fix crash due to unvalidated vcc pointer in sigd_send()

    In the Linux kernel, the following vulnerability has been resolved: net: atm: fix crash due to unvalidated vcc pointer in sigd_send() Reproducer available at [1]. The ATM send path (sendmsg -> vcc_sendmsg -> sigd_send) reads the vcc pointer from msg->vcc and …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • 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