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Oracle Linux 9 : kernel (ELSA-2026-21556)

high Nessus Plugin ID 324341

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-21556 advisory.

 - net/sched: fix pedit partial COW leading to page cache corruption (Ivan Vecera) [RHEL-177392] {CVE-2026-46331}
 - scsi: qla2xxx: Completely fix fcport double free (Ewan D. Milne) [RHEL-179754] {CVE-2026-43414}
 - nvmet-tcp: fix race between ICReq handling and queue teardown (Chris Leech) [RHEL-180102] {CVE-2026-46135}
 - RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CKI Backport Bot) [RHEL-180158] {CVE-2026-46117}
 - exit: prevent preemption of oopsing TASK_DEAD task (CKI Backport Bot) [RHEL-180016] {CVE-2026-46173}
 - ALSA: usb-audio: Add sanity check for OOB writes at silencing (CKI Backport Bot) [RHEL-173941] {CVE-2026-43279}
 - gfs2: Fix use-after-free in iomap inline data write path (Andrew Price) [RHEL-179589] {CVE-2026-45984}
 - gfs2: Add metapath_dibh helper (Andrew Price) [RHEL-179589] {CVE-2026-45984}
 - bnxt_en: Fix RSS context delete logic (CKI Backport Bot) [RHEL-180308] {CVE-2026-43260}
 - wifi: mac80211: remove station if connection prep fails (CKI Backport Bot) [RHEL-180121] {CVE-2026-46125}
 - RDMA/mana: Validate rx_hash_key_len (CKI Backport Bot) [RHEL-180085] {CVE-2026-46145}
 - wifi: mac80211: drop stray 'static' from fast-RX rx_result (CKI Backport Bot) [RHEL-180057] {CVE-2026-46152}
 - wifi: mac80211: use safe list iteration in radar detect work (CKI Backport Bot) [RHEL-180025] {CVE-2026-46166}
 - Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CKI Backport Bot) [RHEL-179359] {CVE-2026-46056}
 - mptcp: fix slab-use-after-free in __inet_lookup_established (Davide Caratti) [RHEL-171506] {CVE-2026-31669}
 - can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CKI Backport Bot) [RHEL-175525] {CVE-2026-31474}
 - Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CKI Backport Bot) [RHEL-172858] {CVE-2026-31772}
 - xen/privcmd: fix double free via VMA splitting (CKI Backport Bot) [RHEL-172488] {CVE-2026-31787}
 - ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (Guillaume Nault) [RHEL-172646] {CVE-2026-43037}
 - net: openvswitch: Avoid releasing netdev before teardown completes (CKI Backport Bot) [RHEL-170539] {CVE-2026-31508}
 - RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() (Kamal Heib) [RHEL-179988] {CVE-2026-46181}
 - ipv6: rpl: reserve mac_len headroom when recompressed SRH grows (Antoine Tenart) [RHEL-178408] {CVE-2026-43501}
 - RDMA/rxe: Fix double free in rxe_srq_from_init (CKI Backport Bot) [RHEL-179712] {CVE-2026-45852}
 - netfilter: ctnetlink: ensure safe access to master conntrack (Florian Westphal) [RHEL-173843] {CVE-2026-43116}
 - dlm: fix buffer overflow from negative len in dlm_search_rsb_tree (Alexander Aring) [RHEL-173993] {CVE-2026-43125}
 - dlm: validate length in dlm_search_rsb_tree (Alexander Aring) [RHEL-173993] {CVE-2026-43125}
 - ALSA: 6fire: fix use-after-free on disconnect (CKI Backport Bot) [RHEL-172969] {CVE-2026-31581}
 - net: mana: fix use-after-free in add_adev() error path (CKI Backport Bot) [RHEL-172768] {CVE-2026-43056}
 - scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() (CKI Backport Bot) [RHEL-165564] {CVE-2026-23216}
 - net: bonding: fix use-after-free in bond_xmit_broadcast() (CKI Backport Bot) [RHEL-168068] {CVE-2026-31419}
 - smb: client: reject userspace cifs.spnego descriptions (Paulo Alcantara) [RHEL-178944] {CVE-2026-46243}
 - Buffer overflow in drivers/xen/sys-hypervisor.c (Vitaly Kuznetsov) [RHEL-172510] {CVE-2026-31786}
 - smb: client: fix OOB reads parsing symlink error response (CKI Backport Bot) [RHEL-171471] {CVE-2026-31613}
 - netfilter: xt_tcpmss: check remaining length before reading optlen (CKI Backport Bot) [RHEL-174216] {CVE-2026-43190}
 - wifi: brcmfmac: validate bsscfg indices in IF events (CKI Backport Bot) [RHEL-173848] {CVE-2026-43110}
 - Bluetooth: SCO: fix race conditions in sco_sock_connect() (CKI Backport Bot) [RHEL-172599] {CVE-2026-43023}
 - Bluetooth: MGMT: validate LTK enc_size on load (CKI Backport Bot) [RHEL-172572] {CVE-2026-43020}
 - proc: fix type confusion in pde_set_flags() (Abhi Das) [RHEL-163343] {CVE-2025-38653}
 - proc: fix missing pde_set_flags() for net proc files (Abhi Das) [RHEL-163343] {CVE-2025-38653}
 - proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al (CKI Backport Bot) [RHEL-163343] {CVE-2025-38653}
 - mm/page_alloc: clear page->private in free_pages_prepare() (Rafael Aquini) [RHEL-174750] {CVE-2026-43303}
 - smb: client: validate the whole DACL before rewriting it in cifsacl (Paulo Alcantara) [RHEL-172821] {CVE-2026-31709}
 - Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (David Marlin) [RHEL-165063] {CVE-2026-31408}
 - xfs: fix freemap adjustments when adding xattrs to leaf blocks (CKI Backport Bot) [RHEL-174058] {CVE-2026-43158}
 - xfs: delete attr leaf freemap entries when empty (CKI Backport Bot) [RHEL-174058] {CVE-2026-43158}
 - HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq (CKI Backport Bot) [RHEL-172740] {CVE-2026-43051}
 - netfilter: nf_conntrack_helper: pass helper to expect cleanup (CKI Backport Bot) [RHEL-172620] {CVE-2026-43027}
 - netfilter: ip6t_eui64: reject invalid MAC header for all packets (CKI Backport Bot) [RHEL-171155] {CVE-2026-31685}
 - net: sched: act_csum: validate nested VLAN headers (CKI Backport Bot) [RHEL-171138] {CVE-2026-31684}
 - nbd: defer config unlock in nbd_genl_connect (Jeff Moyer) [RHEL-166950] {CVE-2025-68366}
 - x86/mm: flush IOMMU before freeing kernel page table pages (Jerry Snitselaar) [RHEL-167100] {CVE-2025-71089}
 - iommu/sva: add kernel page table IOTLB flush notification (Jerry Snitselaar) [RHEL-167100] {CVE-2025-71089}
 - netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() (CKI Backport Bot) [RHEL-166987] {CVE-2026-23455}
 - crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id (CKI Backport Bot) [RHEL-166927] {CVE-2025-68724}
 - ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (Bruno Meneguele) [RHEL-169734] {CVE-2025-68183}
 - netfilter: nf_tables: release flowtable after rcu grace period on error (CKI Backport Bot) [RHEL-160461] {CVE-2026-23392}
 - net: skbuff: propagate shared-frag marker through frag-transfer helpers (Sabrina Dubroca) [RHEL-176064] {CVE-2026-46300}
 - net: move skb_gro_receive_list from udp to core (Sabrina Dubroca) [RHEL-176064] {CVE-2026-46300}
 - net: skbuff: preserve shared-frag marker during coalescing (Sabrina Dubroca) [RHEL-176064] {CVE-2026-46300}
 - ptrace: slightly saner 'get_dumpable()' logic (Ricardo Robaina) [RHEL-176454] {CVE-2026-46333}
 - md/bitmap: fix GPF in write_page caused by resize race (Nigel Croxon) [RHEL-174091] {CVE-2026-43163}
 - RDMA/umem: Fix double dma_buf_unpin in failure path (CKI Backport Bot) [RHEL-174020] {CVE-2026-43128}
 - usbip: validate number_of_packets in usbip_pack_ret_submit() (CKI Backport Bot) [RHEL-171430] {CVE-2026-31607}
 - can: raw: fix ro->uniq use-after-free in raw_rcv() (CKI Backport Bot) [RHEL-170759] {CVE-2026-31532}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2026-21556.html

Plugin Details

Severity: High

ID: 324341

File Name: oraclelinux_ELSA-2026-21556.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/1/2026

Updated: 7/1/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.48

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-43027

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:kernel-tools-libs-devel, p-cpe:/a:oracle:linux:rtla, p-cpe:/a:oracle:linux:kernel-devel, p-cpe:/a:oracle:linux:kernel-cross-headers, p-cpe:/a:oracle:linux:kernel-debug-modules, p-cpe:/a:oracle:linux:kernel-tools, p-cpe:/a:oracle:linux:rv, p-cpe:/a:oracle:linux:kernel-debug-devel, cpe:/o:oracle:linux:9:8:baseos_patch, p-cpe:/a:oracle:linux:kernel-headers, cpe:/o:oracle:linux:9, p-cpe:/a:oracle:linux:kernel-debug-uki-virt, p-cpe:/a:oracle:linux:kernel-debug-modules-core, p-cpe:/a:oracle:linux:kernel-modules, p-cpe:/a:oracle:linux:kernel-debug-devel-matched, p-cpe:/a:oracle:linux:kernel-abi-stablelists, p-cpe:/a:oracle:linux:kernel-devel-matched, p-cpe:/a:oracle:linux:kernel-debug, p-cpe:/a:oracle:linux:kernel-modules-core, p-cpe:/a:oracle:linux:kernel-core, p-cpe:/a:oracle:linux:kernel-uki-virt, p-cpe:/a:oracle:linux:libperf, p-cpe:/a:oracle:linux:kernel-debug-modules-extra, p-cpe:/a:oracle:linux:python3-perf, p-cpe:/a:oracle:linux:kernel-debug-core, p-cpe:/a:oracle:linux:kernel-uki-virt-addons, p-cpe:/a:oracle:linux:perf, p-cpe:/a:oracle:linux:kernel-modules-extra, p-cpe:/a:oracle:linux:kernel-tools-libs, p-cpe:/a:oracle:linux:kernel

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 6/29/2026

Vulnerability Publication Date: 8/22/2025

Reference Information

CVE: CVE-2025-38653, CVE-2025-68183, CVE-2025-68366, CVE-2025-68724, CVE-2025-71089, CVE-2026-23392, CVE-2026-23455, CVE-2026-31408, CVE-2026-31684, CVE-2026-31685, CVE-2026-31709, CVE-2026-43020, CVE-2026-43023, CVE-2026-43027, CVE-2026-43051, CVE-2026-43110, CVE-2026-43158, CVE-2026-43190, CVE-2026-43303, CVE-2026-46195