Detections
Analytics

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2026-500238)

medium Nessus Plugin ID 342650

Synopsis

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

Description

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-500238 advisory.

 - x86/bugs: Make Safe-RET robust against interrupt injection (Borislav Petkov (AMD)) [Orabug: 39784513] {CVE-2026-68480}
 - ocfs2: fix possible deadlock between unlink and dio_end_io_write (Joseph Qi) [Orabug: 39273589] {CVE-2026-31598}
 - xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete (Michal Kosiorek) [Orabug: 39460235] {CVE-2026-46116}
 - net/rds: zero per-item info buffer before handing it to visitors (Michael Bommarito) [Orabug: 39638198] {CVE-2026-52995}
 - xfs: resample the data fork mapping after cycling ILOCK (Darrick J. Wong) [Orabug: 39776792] {CVE-2026-64600}
 - KVM: x86: Fix shadow paging use-after-free due to unexpected role (Paolo Bonzini) [Orabug: 39673871] {CVE-2026-53359}
 - KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (Sean Christopherson) [Orabug:
 39673871] {CVE-2026-46113}
 - net/sched: fix pedit partial COW leading to page cache corruption (Rajat Gupta) [Orabug: 39567287] {CVE-2026-46331}
 - RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv (hkbinbin) [Orabug: 39452261] {CVE-2026-46043}
 - locking/rtmutex: Skip remove_waiter() when waiter is not enqueued (Davidlohr Bueso) [Orabug: 39426001] {CVE-2026-53163}
 - rtmutex: Use waiter::task instead of current in remove_waiter() (Keenan Dong) [Orabug: 39426001] {CVE-2026-43499}
 - ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() (Eric Dumazet) [Orabug: 39300930] {CVE-2026-43038}
 - net: skbuff: fix missing zerocopy reference in pskb_carve helpers (Minh Nguyen) [Orabug: 39619389] {CVE-2026-52943}
 - net: fix fanout UAF in packet_release() via NETDEV_UP race (Yochai Eisenrich) [Orabug: 39250953] {CVE-2026-31504}
 - net: tap: NULL pointer derefence in dev_parse_header_protocol when skb->dev is null (Cezar Bulinaru) [Orabug: 39526882] {CVE-2022-50073}
 - arm64: errata: Mitigate TLBI errata on various Arm CPUs (Mark Rutland) [Orabug: 39548666] {CVE-2025-10263} {CVE-2026-53354}
 - ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (Eric Dumazet) [Orabug: 39300926] {CVE-2026-43037}
 - batman-adv: hold claim backbone gateways by reference (Haoze Xie) [Orabug: 39262375] {CVE-2026-31657}
 - scsi: fcoe: Reject FIP descriptors with zero fip_dlen in CVL walker (Michael Bommarito) [Orabug:
 39446045] {CVE-2026-63890}
 - scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (Michael Bommarito) [Orabug: 39446045] {CVE-2026-63888}
 - scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (Michael Bommarito) [Orabug:
 39446045] {CVE-2026-63887}
 - smb: client: reject userspace cifs.spnego descriptions (Asim Viladi Oglu Manizada) [Orabug: 39463669] {CVE-2026-46243}
 - tun: free page on build_skb failure in tun_xdp_one() (Weiming Shi) [Orabug: 39429147] {CVE-2026-46322}
 - tap: free page on error paths in tap_get_user_xdp() (Weiming Shi) [Orabug: 39429147] {CVE-2026-46320}

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-2026-500238.html

Plugin Details

Severity: Medium

ID: 342650

File Name: oraclelinux_ELSA-2026-500238.nasl

Version: 1.2

Type: Local

Agent: unix

Published: 9/3/2026

Updated: 9/3/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.92

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-52995

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/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: cpe:/o:oracle:linux:7, cpe:/o:oracle:linux:8, cpe:/o:oracle:linux:8:10:baseos_patch, p-cpe:/a:oracle:linux:kernel-uek-container-debug, p-cpe:/a:oracle:linux:kernel-uek-container, p-cpe:/a:oracle:linux:kernel-uek-debug-devel, p-cpe:/a:oracle:linux:kernel-uek-debug, p-cpe:/a:oracle:linux:kernel-uek-devel, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:kernel-uek-tools, p-cpe:/a:oracle:linux:kernel-uek

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/1/2026

Vulnerability Publication Date: 4/24/2026

Reference Information

CVE: CVE-2026-31598, CVE-2026-46116, CVE-2026-52995, CVE-2026-68480