Oracle alert ELSA-2026-21706 (kernel)
| From: | Errata Announcements for Oracle Linux via El-errata <el-errata@oss.oracle.com> | |
| To: | el-errata@oss.oracle.com | |
| Subject: | [El-errata] ELSA-2026-21706 Important: Oracle Linux 8 kernel security update | |
| Date: | Wed, 03 Jun 2026 02:19:13 -0700 | |
| Message-ID: | <mailman.121.1780478370.34.el-errata@oss.oracle.com> |
Oracle Linux Security Advisory ELSA-2026-21706 http://linux.oracle.com/errata/ELSA-2026-21706.html The following updated rpms for Oracle Linux 8 have been uploaded to the Unbreakable Linux Network: x86_64: bpftool-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-abi-stablelists-4.18.0-553.126.1.el8_10.noarch.rpm kernel-core-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-cross-headers-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-debug-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-debug-core-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-debug-devel-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-debug-modules-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-debug-modules-extra-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-devel-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-doc-4.18.0-553.126.1.el8_10.noarch.rpm kernel-headers-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-modules-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-modules-extra-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-tools-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-tools-libs-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-tools-libs-devel-4.18.0-553.126.1.el8_10.x86_64.rpm perf-4.18.0-553.126.1.el8_10.x86_64.rpm python3-perf-4.18.0-553.126.1.el8_10.x86_64.rpm aarch64: bpftool-4.18.0-553.126.1.el8_10.aarch64.rpm kernel-cross-headers-4.18.0-553.126.1.el8_10.aarch64.rpm kernel-headers-4.18.0-553.126.1.el8_10.aarch64.rpm kernel-tools-4.18.0-553.126.1.el8_10.aarch64.rpm kernel-tools-libs-4.18.0-553.126.1.el8_10.aarch64.rpm kernel-tools-libs-devel-4.18.0-553.126.1.el8_10.aarch64.rpm perf-4.18.0-553.126.1.el8_10.aarch64.rpm python3-perf-4.18.0-553.126.1.el8_10.aarch64.rpm SRPMS: http://oss.oracle.com/ol8/SRPMS-updates/kernel-4.18.0-553... Related CVEs: CVE-2025-39981 CVE-2025-68183 CVE-2025-68347 CVE-2025-71116 CVE-2026-23243 CVE-2026-23270 CVE-2026-23455 CVE-2026-31408 CVE-2026-31532 CVE-2026-31684 CVE-2026-31685 CVE-2026-31709 CVE-2026-43020 CVE-2026-43027 CVE-2026-43051 CVE-2026-43158 CVE-2026-43163 CVE-2026-43190 Description of changes: [4.18.0-553.126.1] - 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] [4.18.0-553.126.1] - crypto: af_alg - Work around empty control messages without MSG_MORE (Thomas Huth) [RHEL-175772] - crypto: af_alg - Fix regression on empty requests (Thomas Huth) [RHEL-175772] - crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock() (Thomas Huth) [RHEL-175772] - crypto: af_alg - remove redundant initializations of sk_family (Thomas Huth) [RHEL-175772] - crypto: af_alg - Use bh_lock_sock in sk_destruct (Thomas Huth) [RHEL-175772] - crypto: algif_aead - fix uninitialized ctx->init (Thomas Huth) [RHEL-175772] - crypto: algif_aead - Only wake up when ctx->more is zero (Thomas Huth) [RHEL-175772] - crypto: algif_aead - Do not set MAY_BACKLOG on the async path (Thomas Huth) [RHEL-175772] - crypto: null - Remove VLA usage of skcipher (Thomas Huth) [RHEL-175772] - smb: client: validate dacloffset before building DACL pointers (Paulo Alcantara) [RHEL-172815] - smb: client: use kzalloc to zero-initialize security descriptor buffer (Paulo Alcantara) [RHEL-172815] - smb: client: scope end_of_dacl to CIFS_DEBUG2 use in parse_dacl (Paulo Alcantara) [RHEL-172815] - smb: client: require a full NFS mode SID before reading mode bits (Paulo Alcantara) [RHEL-172815] - smb: client: validate the whole DACL before rewriting it in cifsacl (Paulo Alcantara) [RHEL-172815] {CVE-2026-31709} - smb: client: Return a status code only as a constant in sid_to_id() (Paulo Alcantara) [RHEL-172815] - cifs: add validation check for the fields in smb_aces (Paulo Alcantara) [RHEL-172815] - cifs: fix incorrect validation for num_aces field of smb_acl (Paulo Alcantara) [RHEL-172815] - smb: common: change the data type of num_aces to le16 (Paulo Alcantara) [RHEL-172815] - netfilter: xt_tcpmss: check remaining length before reading optlen (CKI Backport Bot) [RHEL-174212] {CVE-2026-43190} - md/bitmap: fix GPF in write_page caused by resize race (CKI Backport Bot) [RHEL-174088] {CVE-2026-43163} - xfs: fix freemap adjustments when adding xattrs to leaf blocks (CKI Backport Bot) [RHEL-174045] {CVE-2026-43158} - xfs: delete attr leaf freemap entries when empty (CKI Backport Bot) [RHEL-174045] {CVE-2026-43158} - can: raw: fix ro->uniq use-after-free in raw_rcv() (Davide Caratti) [RHEL-170753] {CVE-2026-31532} - can: af_can: export can_sock_destruct() (Davide Caratti) [RHEL-170753] {CVE-2026-31532} - HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq (CKI Backport Bot) [RHEL-172734] {CVE-2026-43051} - netfilter: nf_conntrack_helper: pass helper to expect cleanup (CKI Backport Bot) [RHEL-172614] {CVE-2026-43027} - Bluetooth: MGMT: validate LTK enc_size on load (CKI Backport Bot) [RHEL-172566] {CVE-2026-43020} - Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (David Marlin) [RHEL-165057] {CVE-2026-31408} - Bluetooth: SCO: Fix UAF on sco_sock_timeout (David Marlin) [RHEL-165057] {CVE-2026-31408} - Bluetooth: Fix use-after-free bugs caused by sco_sock_timeout (David Marlin) [RHEL-165057] {CVE-2026-31408} - Bluetooth: Init sk_peer_* on bt_sock_alloc (David Marlin) [RHEL-165057] {CVE-2026-31408} - Bluetooth: Consolidate code around sk_alloc into a helper function (David Marlin) [RHEL-165057] {CVE-2026-31408} - netfilter: ip6t_eui64: reject invalid MAC header for all packets (CKI Backport Bot) [RHEL-171149] {CVE-2026-31685} - net: sched: act_csum: validate nested VLAN headers (CKI Backport Bot) [RHEL-171132] {CVE-2026-31684} - smb: client: fix mid_q_entry memleak leak with per-mid locking (Paulo Alcantara) [RHEL-164032] - smb: client: smb: client: eliminate mid_flags field (Paulo Alcantara) [RHEL-164032] - smb: client: add mid_counter_lock to protect the mid counter counter (Paulo Alcantara) [RHEL-164032] - smb: client: rename server mid_lock to mid_queue_lock (Paulo Alcantara) [RHEL-164032] - smb3: fix lock ordering potential deadlock in cifs_sync_mid_result (Paulo Alcantara) [RHEL-164032] - smb: client: remove redundant lstrp update in negotiate protocol (Paulo Alcantara) [RHEL-164032] - smb: client: fix race condition in negotiate timeout by using more precise timing (Paulo Alcantara) [RHEL-164032] - smb: client: fix first command failure during re-negotiation (Paulo Alcantara) [RHEL-164032] - smb: client: fix hang in wait_for_response() for negproto (Paulo Alcantara) [RHEL-164032] - ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (Bruno Meneguele) [RHEL-166886] {CVE-2025-68183} - selftests/bpf: Test outer map update operations in syscall program (Viktor Malik) [RHEL-152219] - selftests/bpf: Add test cases for inner map (Viktor Malik) [RHEL-152219] - bpf: prepare for more bpf syscall to be used from kernel and user space. (Viktor Malik) [RHEL-152219] - bpf: Optimize the free of inner map (Viktor Malik) [RHEL-152219] - bpf: Defer the free of inner map when necessary (Viktor Malik) [RHEL-152219] - bpf: Set need_defer as false when clearing fd array during map free (Viktor Malik) [RHEL-152219] - bpf: Add map and need_defer parameters to .map_fd_put_ptr() (Viktor Malik) [RHEL-152219] - bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers (Viktor Malik) [RHEL-152219] - netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() (CKI Backport Bot) [RHEL-166981] {CVE-2026-23455} - ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events (CKI Backport Bot) [RHEL-166960] {CVE-2025-68347} - RDMA/umad: Reject negative data_len in ib_umad_write (Kamal Heib) [RHEL-156872] {CVE-2026-23243} - Bluetooth: mgmt: remove NULL check in add_ext_adv_params_complete() (David Marlin) [RHEL-122890] - Bluetooth: MGMT: Fix list corruption and UAF in command complete handlers (David Marlin) [RHEL-122890] - Bluetooth: MGMT: Fix memory leak in set_ssp_complete (David Marlin) [RHEL-122890] - Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once (David Marlin) [RHEL-122890] - Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_add_adv_monitor() (David Marlin) [RHEL-122890] - Bluetooth: ISO: don't try to remove CIG if there are bound CIS left (David Marlin) [RHEL-122890] - Bluetooth: hci_sync: Don't double print name in add/remove adv_monitor (David Marlin) [RHEL-122890] - Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor() (David Marlin) [RHEL-122890] - Bluetooth: hci_event: Fix Invalid wait context (David Marlin) [RHEL-122890] - Bluetooth: hci_sync: Fix use HCI_OP_LE_READ_BUFFER_SIZE_V2 (David Marlin) [RHEL-122890] - Bluetooth: hci_conn: Fix crash on hci_create_cis_sync (David Marlin) [RHEL-122890] - Bluetooth: hci_conn: Fix not restoring ISO buffer count on disconnect (David Marlin) [RHEL-122890] - Bluetooth: Fix HCIGETDEVINFO regression (David Marlin) [RHEL-122890] - Bluetooth: hci_sync: Fix hci_read_buffer_size_sync (David Marlin) [RHEL-122890] - Bluetooth: hci_sync: fix double mgmt_pending_free() in remove_adv_monitor() (David Marlin) [RHEL-122890] - Bluetooth: hci_conn: Fix updating ISO QoS PHY (David Marlin) [RHEL-122890] - Bluetooth: MGMT: Fix dangling pointer on mgmt_add_adv_patterns_monitor_complete (David Marlin) [RHEL-122890] - Bluetooth: MGMT: Fix possible UAFs (David Marlin) [RHEL-122890] {CVE-2025-39981} - Bluetooth: hci_sync: fix set_local_name race condition (David Marlin) [RHEL-122890] {CVE-2025-39981} - Bluetooth: hci_sync: Add helper functions to manipulate cmd_sync queue (David Marlin) [RHEL-122890] - Bluetooth: Fix race condition in hci_cmd_sync_clear (David Marlin) [RHEL-122890] - Bluetooth: hci_sock: Prevent race in socket write iter and sock bind (David Marlin) [RHEL-122890] - Bluetooth: MGMT: Protect mgmt_pending list with its own lock (David Marlin) [RHEL-122890] - Bluetooth: MGMT: Fix sparse errors (David Marlin) [RHEL-122890] - Bluetooth: MGMT: Fix possible crash on mgmt_index_removed (David Marlin) [RHEL-122890] - Bluetooth: Add initial implementation of CIS connections (David Marlin) [RHEL-122890] - Bluetooth: hci_core: Fix possible buffer overflow (David Marlin) [RHEL-122890] - Bluetooth: Keep MGMT pending queue ordered FIFO (David Marlin) [RHEL-122890] - Bluetooth: MGMT: Remove unused mgmt_pending_find_data (David Marlin) [RHEL-122890] - Bluetooth: MGMT: Fix UAF on mgmt_remove_adv_monitor_complete (David Marlin) [RHEL-122890] {CVE-2025-39981} - Bluetooth: MGMT: Fix slab-use-after-free Read in mgmt_remove_adv_monitor_sync (David Marlin) [RHEL-122890] - Bluetooth: hci_sync: Using hci_cmd_sync_submit when removing Adv Monitor (David Marlin) [RHEL-122890] - Bluetooth: MGMT: Fix possible deadlocks (David Marlin) [RHEL-122890] {CVE-2025-39981} - Bluetooth: MGMT: Fix slab-use-after-free Read in set_powered_sync (David Marlin) [RHEL-122890] {CVE-2025-39981} - Bluetooth: mgmt: remove NULL check in mgmt_set_connectable_complete() (David Marlin) [RHEL-122890] {CVE-2025-39981} - Bluetooth: hci_sync: Refactor remove Adv Monitor (David Marlin) [RHEL-122890] {CVE-2025-39981} - Bluetooth: hci_sync: Refactor add Adv Monitor (David Marlin) [RHEL-122890] {CVE-2025-39981} - Bluetooth: msft: Move code snippet to correct location (David Marlin) [RHEL-122890] - Bluetooth: msft: Clear tracked devices on resume (David Marlin) [RHEL-122890] {CVE-2025-39981} - Bluetooth: mgmt: Add MGMT Adv Monitor Device Found/Lost events (David Marlin) [RHEL-122890] {CVE-2025-39981} - Bluetooth: msft: Handle MSFT Monitor Device Event (David Marlin) [RHEL-122890] {CVE-2025-39981} - net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks (CKI Backport Bot) [RHEL-157322] {CVE-2026-23270} - libceph: make decode_pool() more resilient against corrupted osdmaps (CKI Backport Bot) [RHEL-142093] {CVE-2025-71116} _______________________________________________ El-errata mailing list El-errata@oss.oracle.com https://oss.oracle.com/mailman/listinfo/el-errata