[El-errata] ELSA-2026-55764 Important: Oracle Linux 8 kernel security, bug fix, and enhancement update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-55764

http://linux.oracle.com/errata/ELSA-2026-55764.html

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

x86_64:
bpftool-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-abi-stablelists-4.18.0-553.156.1.el8_10.noarch.rpm
kernel-core-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-cross-headers-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-debug-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-debug-core-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-debug-devel-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-debug-modules-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-debug-modules-extra-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-devel-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-doc-4.18.0-553.156.1.el8_10.noarch.rpm
kernel-headers-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-modules-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-modules-extra-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-tools-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-tools-libs-4.18.0-553.156.1.el8_10.x86_64.rpm
kernel-tools-libs-devel-4.18.0-553.156.1.el8_10.x86_64.rpm
perf-4.18.0-553.156.1.el8_10.x86_64.rpm
python3-perf-4.18.0-553.156.1.el8_10.x86_64.rpm

aarch64:
bpftool-4.18.0-553.156.1.el8_10.aarch64.rpm
kernel-cross-headers-4.18.0-553.156.1.el8_10.aarch64.rpm
kernel-headers-4.18.0-553.156.1.el8_10.aarch64.rpm
kernel-tools-4.18.0-553.156.1.el8_10.aarch64.rpm
kernel-tools-libs-4.18.0-553.156.1.el8_10.aarch64.rpm
kernel-tools-libs-devel-4.18.0-553.156.1.el8_10.aarch64.rpm
perf-4.18.0-553.156.1.el8_10.aarch64.rpm
python3-perf-4.18.0-553.156.1.el8_10.aarch64.rpm


SRPMS:
http://oss.oracle.com/ol8/SRPMS-updates/kernel-4.18.0-553.156.1.el8_10.src.rpm

Related CVEs:

CVE-2025-39902
CVE-2026-17523
CVE-2026-43206
CVE-2026-53016
CVE-2026-53136
CVE-2026-53329
CVE-2026-53374
CVE-2026-63879
CVE-2026-63884
CVE-2026-64219




Description of changes:

[4.18.0-553.155.1]
- 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]
- udf: fix partition descriptor append bookkeeping (Ravi Singh) [RHEL-179571] {CVE-2026-45991}
- ice: fix double-free of tx_buf skb (Michal Schmidt) [RHEL-192193] {CVE-2026-53009}

[4.18.0-553.156.1]
- drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() (CKI Backport Bot) [RHEL-221327] {CVE-2026-43206}
- drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async (CKI Backport Bot) [RHEL-222576] {CVE-2026-64219}
- drm/amdgpu: fix amdgpu_hmm_range_get_pages (CKI Backport Bot) [RHEL-222620] {CVE-2026-63879}
- drm/i915: Fix potential UAF in TTM object purge (CKI Backport Bot) [RHEL-222738] {CVE-2026-63884}
- drm/amd/display: Use krealloc_array() in dal_vector_reserve() (CKI Backport Bot) [RHEL-222662] {CVE-2026-53329}
- drm/amd/display: Clamp VBIOS HDMI retimer register count to array size (CKI Backport Bot) [RHEL-222680] {CVE-2026-53136}
- mm/slub: avoid accessing metadata when pointer is invalid in object_err() (Luiz Capitulino) [RHEL-226551] {CVE-2025-39902}
- drm/amdgpu: zero-initialize GART table on allocation (CKI Backport Bot) [RHEL-222656] {CVE-2026-53374}
- vhost: reset the vring metadata cache on vring reconfiguration (CKI Backport Bot) [RHEL-224556]
- can: bcm: extend bcm_tx_lock usage for data and timer updates (Guillaume Nault) [RHEL-216711] {CVE-2026-17523}
- can: bcm: add locking when updating filter and timer values (Guillaume Nault) [RHEL-216711] {CVE-2026-17523}
- can: bcm: fix locking for bcm_op runtime updates (Guillaume Nault) [RHEL-216711] {CVE-2026-17523}
- can: bcm: add locking for bcm_op runtime updates (Guillaume Nault) [RHEL-216711] {CVE-2026-17523}
- can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write (Guillaume Nault) [RHEL-216711] {CVE-2026-17523}
- can: bcm: check the result of can_send() in bcm_can_tx() (Guillaume Nault) [RHEL-216711] {CVE-2026-17523}
- can: bcm: Use hrtimer_forward_now() (Guillaume Nault) [RHEL-216711] {CVE-2026-17523}
- can: bcm: switch timer to HRTIMER_MODE_SOFT and remove hrtimer_tasklet (Guillaume Nault) [RHEL-216711] {CVE-2026-17523}
- sched/deadline: Update GRUB description in the documentation (Herton R. Krzesinski) [RHEL-189997]
- sched/deadline: fix kABI breakage after the introduction of max_bw on dl_rq (Herton R. Krzesinski) [RHEL-189997]
- sched/deadline: Fix bandwidth reclaim equation in GRUB (Herton R. Krzesinski) [RHEL-189997]
- crypto: ccp - copy IV using skcipher ivsize (CKI Backport Bot) [RHEL-188453] {CVE-2026-53016}