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High ELSA-2026-16195 1 CVE

Important: kernel security update (Oracle Linux 8)

Published May 13, 2026 · Updated May 13, 2026

Summary

[4.18.0-553.124.1]
- 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]

[4.18.0-553.124.1]
- xfrm: esp: avoid in-place decrypt on shared skb frags (Sabrina Dubroca) [RHEL-174586] {CVE-2026-43284}

Fixed packages 20

ReleasePackageFixed in
Oracle Linux · 8 bpftool 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-abi-stablelists 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-core 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-cross-headers 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-debug 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-debug-core 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-debug-devel 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-debug-modules 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-debug-modules-extra 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-devel 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-doc 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-headers 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-modules 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-modules-extra 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-tools 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-tools-libs 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 kernel-tools-libs-devel 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 perf 0:4.18.0-553.124.1.el8_10
Oracle Linux · 8 python3-perf 0:4.18.0-553.124.1.el8_10

Vulnerabilities 1

  • High 8.8
    CVE-2026-43284 Public exploit EPSS 94%

    xfrm: esp: avoid in-place decrypt on shared skb frags

    In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: avoid in-place decrypt on shared skb frags MSG_SPLICE_PAGES can attach pages from a pipe directly to an skb. TCP marks such skbs with SKBFL_SHARED_FRAG after skb_splice_from_iter()…