[El-errata] ELSA-2026-36366 Important: Oracle Linux 8 kernel security update

Tue Jul 14 16:05:08 UTC 2026

Oracle Linux Security Advisory ELSA-2026-36366

http://linux.oracle.com/errata/ELSA-2026-36366.html

The following updated rpms for Oracle Linux 8 have been uploaded to the Unbreakable Linux Network:

x86_64:
bpftool-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-abi-stablelists-4.18.0-553.141.1.el8_10.noarch.rpm
kernel-core-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-cross-headers-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-debug-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-debug-core-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-debug-devel-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-debug-modules-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-debug-modules-extra-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-devel-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-doc-4.18.0-553.141.1.el8_10.noarch.rpm
kernel-headers-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-modules-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-modules-extra-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-tools-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-tools-libs-4.18.0-553.141.1.el8_10.x86_64.rpm
kernel-tools-libs-devel-4.18.0-553.141.1.el8_10.x86_64.rpm
perf-4.18.0-553.141.1.el8_10.x86_64.rpm
python3-perf-4.18.0-553.141.1.el8_10.x86_64.rpm

aarch64:
bpftool-4.18.0-553.141.1.el8_10.aarch64.rpm
kernel-cross-headers-4.18.0-553.141.1.el8_10.aarch64.rpm
kernel-headers-4.18.0-553.141.1.el8_10.aarch64.rpm
kernel-tools-4.18.0-553.141.1.el8_10.aarch64.rpm
kernel-tools-libs-4.18.0-553.141.1.el8_10.aarch64.rpm
kernel-tools-libs-devel-4.18.0-553.141.1.el8_10.aarch64.rpm
perf-4.18.0-553.141.1.el8_10.aarch64.rpm
python3-perf-4.18.0-553.141.1.el8_10.aarch64.rpm

SRPMS:
http://oss.oracle.com/ol8/SRPMS-updates/kernel-4.18.0-553.141.1.el8_10.src.rpm

Related CVEs:

CVE-2026-43112

Description of changes:

[4.18.0-553.141.1]
- 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]

[4.18.0-553.141.1]
- fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath (CKI Backport Bot) [RHEL-189506] {CVE-2026-43112}

[4.18.0-553.140.1]
- Enable workaround for ARM64 ERRATUM 4118414 (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: errata: Mitigate TLBI errata on Microsoft Azure Cobalt 100 CPU (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: errata: Mitigate TLBI errata on NVIDIA Olympus CPU (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: errata: Mitigate TLBI errata on various Arm CPUs (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: Add part number for Arm Cortex-A78AE (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: Subscribe Microsoft Azure Cobalt 100 to ARM Neoverse N2 errata (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add NVIDIA Olympus definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add C1-Premium definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add C1-Ultra definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add C1-Pro definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add Cortex-A720AE definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add Neoverse-N3 definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add Cortex-A725 definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add Cortex-A720 definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: Add Cortex-715 CPU part definition (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add Neoverse-V3AE definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add MIDR_CORTEX_A76AE (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add Cortex-X1C definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add Cortex-X925 definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add Cortex-X3 definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add Neoverse-V3 definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: cputype: Add Cortex-X4 definitions (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- arm64: Add Neoverse-V2 part (Mark Salter) [RHEL-183619] {CVE-2025-10263}
- tcp: fix potential race in tcp_v6_syn_recv_sock() (Antoine Tenart) [RHEL-174237] {CVE-2026-43198}
- procfs: fix missing RCU protection when reading real_parent in do_task_stat() (CKI Backport Bot) [RHEL-181898] {CVE-2026-46259}
- drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs() (CKI Backport Bot) [RHEL-179907] {CVE-2026-46209}
- sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL (CKI Backport Bot) [RHEL-179857] {CVE-2026-46227}
- netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() (CKI Backport Bot) [RHEL-179736] {CVE-2026-43450}
- vfs: validate inode i_link before use in get_link() (Ian Kent) [RHEL-152759]

[4.18.0-553.139.1]
- NFS: improve "Server wrote zero bytes" error (Olga Kornievskaia) [RHEL-147665]

[4.18.0-553.138.1]
- redhat: Temporary stop adding 'kernel' component to SBAT (Thomas Huth) [RHEL-182788]
- redhat: Switch to implicit enablement of CONFIG_EFI_SBAT_FILE (Thomas Huth) [RHEL-182788]
- redhat: Add SBAT information to Linux kernel (Thomas Huth) [RHEL-182788]
- x86/boot: Handle relative CONFIG_EFI_SBAT_FILE file paths (Thomas Huth) [RHEL-182788]
- x86/efi: Implement support for embedding SBAT data for x86 (Thomas Huth) [RHEL-182788]
- redhat: Add Kconfig switch for embedding SBAT section (Thomas Huth) [RHEL-182788]
- gfs2: Fix use-after-free in iomap inline data write path (Andrew Price) [RHEL-179596] {CVE-2026-45984}
- gfs2: Add metapath_dibh helper (Andrew Price) [RHEL-179596] {CVE-2026-45984}
- RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CKI Backport Bot) [RHEL-179963] {CVE-2026-46189}
- scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() (CKI Backport Bot) [RHEL-165556] {CVE-2026-23216}