[El-errata] ELSA-2026-81406 Important: Oracle Linux 10 kernel security, bug fix, and enhancement update

Thu Oct 15 09:43:19 UTC 2026

Oracle Linux Security Advisory ELSA-2026-81406

http://linux.oracle.com/errata/ELSA-2026-81406.html

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

x86_64:
kernel-abi-stablelists-6.12.0-211.65.1.el10_2.noarch.rpm
kernel-core-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-cross-headers-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-debug-core-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-debug-devel-matched-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-debug-devel-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-debug-modules-core-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-debug-modules-extra-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-debug-modules-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-debug-uki-virt-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-debug-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-devel-matched-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-devel-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-doc-6.12.0-211.65.1.el10_2.noarch.rpm
kernel-headers-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-modules-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-modules-core-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-modules-extra-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-modules-extra-matched-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-tools-libs-devel-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-tools-libs-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-tools-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-uki-virt-addons-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-uki-virt-6.12.0-211.65.1.el10_2.x86_64.rpm
kernel-6.12.0-211.65.1.el10_2.x86_64.rpm
libperf-6.12.0-211.65.1.el10_2.x86_64.rpm
perf-6.12.0-211.65.1.el10_2.x86_64.rpm
python3-perf-6.12.0-211.65.1.el10_2.x86_64.rpm
rtla-6.12.0-211.65.1.el10_2.x86_64.rpm
rv-6.12.0-211.65.1.el10_2.x86_64.rpm

aarch64:
kernel-cross-headers-6.12.0-211.65.1.el10_2.aarch64.rpm
kernel-headers-6.12.0-211.65.1.el10_2.aarch64.rpm
kernel-tools-libs-devel-6.12.0-211.65.1.el10_2.aarch64.rpm
kernel-tools-libs-6.12.0-211.65.1.el10_2.aarch64.rpm
kernel-tools-6.12.0-211.65.1.el10_2.aarch64.rpm
libperf-6.12.0-211.65.1.el10_2.aarch64.rpm
perf-6.12.0-211.65.1.el10_2.aarch64.rpm
python3-perf-6.12.0-211.65.1.el10_2.aarch64.rpm
rtla-6.12.0-211.65.1.el10_2.aarch64.rpm
rv-6.12.0-211.65.1.el10_2.aarch64.rpm

SRPMS:
http://oss.oracle.com/ol10/SRPMS-updates/kernel-6.12.0-211.65.1.el10_2.src.rpm

Related CVEs:

CVE-2026-43332
CVE-2026-63925
CVE-2026-64191
CVE-2026-64385
CVE-2026-64507
CVE-2026-64508
CVE-2026-68123
CVE-2026-72289
CVE-2026-72318
CVE-2026-80521
CVE-2026-89970

Description of changes:

[6.12.0-211.65.1]
- 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
- 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

[6.12.0-211.65.1]
- nvmet-auth: Synchronize timeout work during SQ teardown (CKI Backport Bot) [RHEL-276363] {CVE-2026-89970}
- thermal: core: Fix thermal zone device registration error path (Dennis Chen) [RHEL-226827] {CVE-2026-43332}
- bpf: Restrict JIT predictor flush to cBPF (Viktor Malik) [RHEL-273875] {CVE-2026-64508}
- x86/bugs: Enable IBPB flush on BPF JIT allocation (Viktor Malik) [RHEL-273900] {CVE-2026-64507}
- bpf: Support for hardening against JIT spraying (Viktor Malik) [RHEL-273875] {CVE-2026-64508}
- tls: Preserve sk_err across recvmsg() when data has been copied (Valentin Schneider) [RHEL-275027]
- net: tls: prevent chain-after-chain in plain text SG (Valentin Schneider) [RHEL-275027]
- net: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring (Valentin Schneider) [RHEL-275027]
- net: tls: fix silent data drop under pipe back-pressure (Valentin Schneider) [RHEL-275027]
- net: tls: fix strparser anchor skb leak on offload RX setup failure (Valentin Schneider) [RHEL-275027]
- net/tls: fix use-after-free in -EBUSY error path of tls_do_encryption (Valentin Schneider) [RHEL-275027]
- tls: Purge async_hold in tls_decrypt_async_wait() (Valentin Schneider) [RHEL-275027]
- tls: Fix race condition in tls_sw_cancel_work_tx() (Valentin Schneider) [RHEL-275027]
- af_unix: Unlink scc_entry in unix_del_edge(). (CKI Backport Bot) [RHEL-270654] {CVE-2026-80521}
- openvswitch: fix GSO userspace truncation underflow (CKI Backport Bot) [RHEL-263802] {CVE-2026-68123}
- macsec: fix replay protection at XPN lower-PN wrap (Abhishek Rawal) [RHEL-226678] {CVE-2026-63925}
- cifs: validate DFS referral string offsets (CKI Backport Bot) [RHEL-261989] {CVE-2026-72318}
- smb: client: fix double-free in SMB2_ioctl() replay (CKI Backport Bot) [RHEL-259796] {CVE-2026-64385}
- KVM: arm64: vgic: Check the interrupt is still ours before migrating it (CKI Backport Bot) [RHEL-252479] {CVE-2026-72289}
- i2c: stub: Reject I2C block transfers with invalid length (CKI Backport Bot) [RHEL-232114] {CVE-2026-64191}

[6.12.0-211.64.1]
- ice: use per-interface clock_id for E825 generic DPLLs (Jakub Ramaseuski) [RHEL-273805]
- ice: add TSPLL DPLL device and TIME_REF pin for E825 (Jakub Ramaseuski) [RHEL-273805]
- ice: monitor TSPLL lock from PTP periodic worker (Jakub Ramaseuski) [RHEL-273805]
- ice: suppress DPLL errors during reset recovery (Jakub Ramaseuski) [RHEL-273805]
- udp: fix potential use-after-free in tunnel segmentation (Antoine Tenart) [RHEL-268127] {CVE-2026-74705}
- nfsd: defer vfree of compound ops to fix rpc_status UAF (Roberto Bergantinos Corpas) [RHEL-264930] {CVE-2026-89690}
- svcrdma: Reject inline replies that overflow the pull-up buffer (Roberto Bergantinos Corpas) [RHEL-187745] {CVE-2026-89530}
- nfsd: fix stale s2s_cp_stateids IDR entry for async COPY (Roberto Bergantinos Corpas) [RHEL-264798] {CVE-2026-89676}
- nfsd: fix UAF in async copy cancel and shutdown (Roberto Bergantinos Corpas) [RHEL-264749] {CVE-2026-89675}
- nfsd: initialize copy-notify stateid before publishing it (Roberto Bergantinos Corpas) [RHEL-264168] {CVE-2026-89669}
- nfsd: revoke copy-notify stateids before dropping their reference (Roberto Bergantinos Corpas) [RHEL-264134] {CVE-2026-89663}
- nfsd: check client ownership when cancelling a copy-notify stateid (Roberto Bergantinos Corpas) [RHEL-264134]
- nfsd: fix cpntf publish race in nfs4_init_cp_state (Roberto Bergantinos Corpas) [RHEL-264134]
- NFSD: Fix SECINFO_NO_NAME decode error cleanup (Roberto Bergantinos Corpas) [RHEL-259243] {CVE-2026-53398}
- SUNRPC: pin upper rpc_clnt across the TLS connect_worker (Roberto Bergantinos Corpas) [RHEL-261492] {CVE-2026-72317}
- vlan: fix skb_under_panic and races when toggling HW VLAN offload (Vb Vasu) [RHEL-254268]
- macvlan: inherit needed_headroom and needed_tailroom from lowerdev (Vb Vasu) [RHEL-254268]
- ipvlan: inherit needed_headroom and needed_tailroom from phy_dev (Vb Vasu) [RHEL-254268] {CVE-2026-74744}
- ipvlan: Make the addrs_lock be per port (Vb Vasu) [RHEL-246118] {CVE-2026-23103}
- vsock/virtio: bind uarg before filling zerocopy skb (Jon Maloy) [RHEL-229037] {CVE-2026-63970}
- vsock/virtio: fix zerocopy completion for multi-skb sends (Jon Maloy) [RHEL-232860] {CVE-2026-53365}
- vsock/virtio: fix MSG_ZEROCOPY pinned-pages accounting (Jon Maloy) [RHEL-232860] {CVE-2026-53365}
- KVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: SEV: Check PSC request indices against the actual size of the buffer (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: SEV: Don't explicitly pass PSC buffer to snp_begin_psc() (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: SEV: WARN if KVM attempts to setup scratch area with min_len==0 (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: SEV: Compute the correct max length of the in-GHCB scratch area (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: SEV: Use the size of the PSC header as the minimum size for PSC requests (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: SEV: Ignore Port I/O requests of length '0' (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: SEV: Reject MMIO requests larger than 8 bytes with GHCB v2+ (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: SEV: Ignore MMIO requests of length '0' (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: x86: Consolidate SEV-ES MMIO emulation into a single public API (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: x86: Dedup kvm_sev_es_mmio_{read,write}() (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: x86: Harden SEV-ES MMIO against on-stack use-after-free (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use (Rahul Kumar) [RHEL-192289] {CVE-2026-53360}
- vsock/vmci: fix UAF when peer resets connection during handshake (CKI Backport Bot) [RHEL-232273] {CVE-2026-64115}
- mlxbf-bootctl: use sysfs_emit_at() in secure_boot_fuse_state_show() (CKI Backport Bot) [RHEL-212709]
- mlxbf-bootctl: Support sysfs entries for RTC battery status (CKI Backport Bot) [RHEL-212709]
- platform/mellanox: mlxbf-bootctl: use sysfs_emit() instead of sprintf() (CKI Backport Bot) [RHEL-212709]
- igc: set tx buffer type for SMD frames (CKI Backport Bot) [RHEL-227035] {CVE-2026-64035}