Detections
Analytics

Oracle Linux 9 : kernel (ELSA-2026-13565)

medium Nessus Plugin ID 312679

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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-2026-13565 advisory.

 - crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption (Vladislav Dronov) [RHEL-172201] {CVE-2026-31431}
 - crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec (Vladislav Dronov) [RHEL-172201] {CVE-2026-23060}
 - crypto: af_alg - limit RX SG extraction by receive buffer budget (Vladislav Dronov) [RHEL-172201] {CVE-2026-31677}
 - crypto: algif_aead - Revert to operating out-of-place (Vladislav Dronov) [RHEL-172201] {CVE-2026-31431}
 - net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks (CKI Backport Bot) [RHEL-157327] {CVE-2026-23270}
 - libceph: reset sparse-read state in osd_fault() (CKI Backport Bot) [RHEL-150464] {CVE-2026-23136}
 - nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (Scott Mayhew) [RHEL-167016] {CVE-2026-31402}

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-2026-13565.html

Plugin Details

Severity: Medium

ID: 312679

File Name: oraclelinux_ELSA-2026-13565.nasl

Version: 1.2

Type: Local

Agent: unix

Published: 5/6/2026

Updated: 5/7/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 4

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

CVSS Score Source: CVE-2026-23136

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5.3

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:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:kernel, p-cpe:/a:oracle:linux:kernel-debug, p-cpe:/a:oracle:linux:kernel-debug-devel, p-cpe:/a:oracle:linux:kernel-devel, p-cpe:/a:oracle:linux:kernel-headers, p-cpe:/a:oracle:linux:kernel-tools, p-cpe:/a:oracle:linux:kernel-tools-libs, p-cpe:/a:oracle:linux:kernel-tools-libs-devel, p-cpe:/a:oracle:linux:perf, p-cpe:/a:oracle:linux:kernel-core, p-cpe:/a:oracle:linux:kernel-cross-headers, p-cpe:/a:oracle:linux:kernel-debug-core, p-cpe:/a:oracle:linux:kernel-debug-modules, p-cpe:/a:oracle:linux:kernel-debug-modules-extra, p-cpe:/a:oracle:linux:kernel-modules, p-cpe:/a:oracle:linux:kernel-modules-extra, p-cpe:/a:oracle:linux:python3-perf, p-cpe:/a:oracle:linux:kernel-abi-stablelists, cpe:/o:oracle:linux:9, p-cpe:/a:oracle:linux:kernel-debug-devel-matched, p-cpe:/a:oracle:linux:kernel-devel-matched, p-cpe:/a:oracle:linux:kernel-debug-modules-core, p-cpe:/a:oracle:linux:kernel-debug-uki-virt, p-cpe:/a:oracle:linux:kernel-modules-core, p-cpe:/a:oracle:linux:kernel-uki-virt, p-cpe:/a:oracle:linux:rtla, p-cpe:/a:oracle:linux:libperf, p-cpe:/a:oracle:linux:rv, p-cpe:/a:oracle:linux:kernel-uki-virt-addons, cpe:/o:oracle:linux:9:7:baseos_patch

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/5/2026

Vulnerability Publication Date: 2/14/2026

CISA Known Exploited Vulnerability Due Dates: 5/15/2026

Exploitable With

Core Impact

Metasploit (Copy Fail AF_ALG + authencesn Page-Cache Write)

Reference Information

CVE: CVE-2026-23136, CVE-2026-23270, CVE-2026-31402, CVE-2026-31431