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Oracle Linux 9 : kernel (ELSA-2025-21926)

medium Nessus Plugin ID 277331

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Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-21926 advisory.

 - mm: slub: avoid wake up kswapd in set_track_prepare (Audra Mitchell) [RHEL-125521] {CVE-2025-39843}
 - slub: Reflow ___slab_alloc() (Audra Mitchell) [RHEL-125521] {CVE-2025-39843}
 - kernfs: Fix UAF in polling when open file is released (Pavel Reichl) [RHEL-122087] {CVE-2025-39881}
 - i40e: add max boundary check for VF filters (Michal Schmidt) [RHEL-123808] {CVE-2025-39968}
 - i40e: fix validation of VF state in get resources (Michal Schmidt) [RHEL-123808] {CVE-2025-39969}
 - i40e: fix input validation logic for action_meta (Michal Schmidt) [RHEL-123808] {CVE-2025-39970}
 - i40e: fix idx validation in config queues msg (Michal Schmidt) [RHEL-123808] {CVE-2025-39971}
 - i40e: fix idx validation in i40e_validate_queue_map (Michal Schmidt) [RHEL-123808] {CVE-2025-39972}
 - i40e: add validation for ring_len param (Michal Schmidt) [RHEL-123808] {CVE-2025-39973}
 - io_uring/waitid: always prune wait queue entry in io_waitid_wait() (CKI Backport Bot) [RHEL-124971] {CVE-2025-40047}
 - Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue (CKI Backport Bot) [RHEL-124129] {CVE-2025-39983}
 - Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync (CKI Backport Bot) [RHEL-123821] {CVE-2025-39982}
 - use uniform permission checks for all mount propagation changes (Ian Kent) [RHEL-121704] {CVE-2025-38498}
 - do_change_type(): refuse to operate on unmounted/not ours mounts (Ian Kent) [RHEL-121704] {CVE-2025-38498}
 - KVM: x86/hyper-v: Skip non-canonical addresses during PV TLB flush (Jon Maloy) [RHEL-117136] {CVE-2025-38351}
 - NFS: Fix a race when updating an existing write (CKI Backport Bot) [RHEL-113855] {CVE-2025-39697}
 - crypto: xts - Handle EBUSY correctly (Vladis Dronov) [RHEL-119236] {CVE-2023-53494}
 - ipv6: sr: Fix MAC comparison to be constant-time (CKI Backport Bot) [RHEL-116383] {CVE-2025-39702}
 - vsock/virtio: Validate length in packet header before skb_put() (Jon Maloy) [RHEL-114298] {CVE-2025-39718}
 - pstore/ram: Check start of empty przs during init (CKI Backport Bot) [RHEL-122068] {CVE-2023-53331}
 - scsi: lpfc: Fix buffer free/clear order in deferred receive path (CKI Backport Bot) [RHEL-119130] {CVE-2025-39841}
 - efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare (CKI Backport Bot) [RHEL-118257] {CVE-2025-39817}
 - sunrpc: fix client side handling of tls alerts (Olga Kornievskaia) [RHEL-110810] {CVE-2025-38571}
 - fs/smb: Fix inconsistent refcnt update (Paulo Alcantara) [RHEL-117880] {CVE-2025-39819}
 - sunrpc: fix handling of server side tls alerts (Steve Dickson) [RHEL-111069] {CVE-2025-38566}
 - wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result() (CKI Backport Bot) [RHEL-117580] {CVE-2025-39849}
 - crypto: seqiv - Handle EBUSY correctly (CKI Backport Bot) [RHEL-117235] {CVE-2023-53373}
 - fs: fix UAF/GPF bug in nilfs_mdt_destroy (CKI Backport Bot) [RHEL-116662] {CVE-2022-50367}
 - firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails (Charles Mirabile) [RHEL-113837] {CVE-2022-50087}
 - x86/vmscape: Add old Intel CPUs to affected list (Waiman Long) [RHEL-114272] {CVE-2025-40300}
 - x86/vmscape: Warn when STIBP is disabled with SMT (Waiman Long) [RHEL-114272] {CVE-2025-40300}
 - x86/bugs: Move cpu_bugs_smt_update() down (Waiman Long) [RHEL-114272] {CVE-2025-40300}
 - x86/vmscape: Enable the mitigation (Waiman Long) [RHEL-114272] {CVE-2025-40300}
 - x86/vmscape: Add conditional IBPB mitigation (Waiman Long) [RHEL-114272] {CVE-2025-40300}
 - x86/vmscape: Enumerate VMSCAPE bug (Waiman Long) [RHEL-114272] {CVE-2025-40300}
 - Documentation/hw-vuln: Add VMSCAPE documentation (Waiman Long) [RHEL-114272] {CVE-2025-40300}

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

Note that Nessus has not tested for this issue 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-2025-21926.html

Plugin Details

Severity: Medium

ID: 277331

File Name: oraclelinux_ELSA-2025-21926.nasl

Version: 1.1

Type: local

Agent: unix

Published: 12/3/2025

Updated: 12/3/2025

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 3.8

Temporal Score: 2.8

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

CVSS Score Source: CVE-2025-39843

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/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, 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, cpe:/o:oracle:linux:9:7:baseos_patch, 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: 11/25/2025

Vulnerability Publication Date: 9/19/2025

Reference Information

CVE: CVE-2025-39843