[El-errata] ELSA-2026-9264 Important: Oracle Linux 10 kernel security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-9264

http://linux.oracle.com/errata/ELSA-2026-9264.html

The following updated rpms for Oracle Linux 10 have been uploaded to the Unbreakable Linux Network:

x86_64:
kernel-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-abi-stablelists-6.12.0-124.52.1.el10_1.noarch.rpm
kernel-core-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-cross-headers-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-debug-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-debug-core-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-debug-devel-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-debug-devel-matched-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-debug-modules-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-debug-modules-core-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-debug-modules-extra-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-debug-uki-virt-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-devel-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-devel-matched-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-doc-6.12.0-124.52.1.el10_1.noarch.rpm
kernel-headers-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-modules-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-modules-core-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-modules-extra-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-modules-extra-matched-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-tools-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-tools-libs-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-tools-libs-devel-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-uki-virt-6.12.0-124.52.1.el10_1.x86_64.rpm
kernel-uki-virt-addons-6.12.0-124.52.1.el10_1.x86_64.rpm
libperf-6.12.0-124.52.1.el10_1.x86_64.rpm
perf-6.12.0-124.52.1.el10_1.x86_64.rpm
python3-perf-6.12.0-124.52.1.el10_1.x86_64.rpm
rtla-6.12.0-124.52.1.el10_1.x86_64.rpm
rv-6.12.0-124.52.1.el10_1.x86_64.rpm

aarch64:
kernel-cross-headers-6.12.0-124.52.1.el10_1.aarch64.rpm
kernel-headers-6.12.0-124.52.1.el10_1.aarch64.rpm
kernel-tools-6.12.0-124.52.1.el10_1.aarch64.rpm
kernel-tools-libs-6.12.0-124.52.1.el10_1.aarch64.rpm
kernel-tools-libs-devel-6.12.0-124.52.1.el10_1.aarch64.rpm
libperf-6.12.0-124.52.1.el10_1.aarch64.rpm
perf-6.12.0-124.52.1.el10_1.aarch64.rpm
python3-perf-6.12.0-124.52.1.el10_1.aarch64.rpm
rtla-6.12.0-124.52.1.el10_1.aarch64.rpm
rv-6.12.0-124.52.1.el10_1.aarch64.rpm


SRPMS:
http://oss.oracle.com/ol10/SRPMS-updates/kernel-6.12.0-124.52.1.el10_1.src.rpm

Related CVEs:

CVE-2025-39766
CVE-2025-68741




Description of changes:

[6.12.0-124.52.1]
- Add new Oracle Linux Driver Signing (key 1) certificate [Orabug: 37985782]
- Disable UKI signing [Orabug: 36571828]
- 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 <= 15.3-1.0.5]
- Remove upstream reference during boot (Kevin Lyons) [Orabug: 34729535]
- Add Oracle Linux IMA certificates
- Update module name for cryptographic module [Orabug: 37400433]
- Clean git history at setup stage

[6.12.0-124.52.1]
- md/raid1: fix data lost for writemostly rdev (Nigel Croxon) [RHEL-143660]

[6.12.0-124.51.1]
- smb: client: fix krb5 mount with username option (Paulo Alcantara) [RHEL-158989]

[6.12.0-124.50.1]
- scsi: qla2xxx: Fix improper freeing of purex item (CKI Backport Bot) [RHEL-159225] {CVE-2025-68741}
- net: hv_netvsc: reject RSS hash key programming without RX indirection table (Vinay Mulugund) [RHEL-150573]
- smb: client: fix oops due to uninitialised var in smb2_unlink() (Paulo Alcantara) [RHEL-154414]
- cifs: some missing initializations on replay (Paulo Alcantara) [RHEL-154414]
- smb: client: split cached_fid bitfields to avoid shared-byte RMW races (Paulo Alcantara) [RHEL-154414]
- cifs: make retry logic in read/write path consistent with other paths (Paulo Alcantara) [RHEL-154414]
- cifs: on replayable errors back-off before replay, not after (Paulo Alcantara) [RHEL-154414]
- smb: client: fix potential UAF and double free in smb2_open_file() (Paulo Alcantara) [RHEL-154414]
- smb/client: fix memory leak in smb2_open_file() (Paulo Alcantara) [RHEL-154414]
- netfs: avoid double increment of retry_count in subreq (Paulo Alcantara) [RHEL-154414]
- netfs: when subreq is marked for retry, do not check if it faced an error (Paulo Alcantara) [RHEL-154414]
- netfs: Fix early read unlock of page with EOF in middle (Paulo Alcantara) [RHEL-154414]
- netfs: fix reference leak (Paulo Alcantara) [RHEL-154414]
- netfs: Prevent duplicate unlocking (Paulo Alcantara) [RHEL-154414]
- netfs: Fix unbuffered write error handling (Paulo Alcantara) [RHEL-154414]
- net/sched: sch_cake: Fix incorrect qlen reduction in cake_drop (CKI Backport Bot) [RHEL-150451] {CVE-2025-39766}
- net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit (CKI Backport Bot) [RHEL-150451] {CVE-2025-39766}
- xfs: set max_agbno to allow sparse alloc of last full inode chunk (Brian Foster) [RHEL-142607]
- iommu/vt-d: Deduplicate cache_tag_flush_all by reusing flush_range (Jerry Snitselaar) [RHEL-144317]
- iommu/vt-d: Fix missing PASID in dev TLB flush with cache_tag_flush_all (Jerry Snitselaar) [RHEL-144317]
- i40e: validate ring_len parameter against hardware-specific values (CKI Backport Bot) [RHEL-141694]