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Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2026-50281)

high Nessus Plugin ID 316003

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Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 7 / 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-50281 advisory.

 - ptrace: slightly saner 'get_dumpable()' logic (Linus Torvalds) [Orabug: 39391459] {CVE-2026-46333}
 - scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (Maurizio Lombardi) [Orabug: 39368774] {CVE-2026-23193}
 - scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() (Maurizio Lombardi) [Orabug:
 39368732] {CVE-2026-23216}
 - nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (Jeff Layton) [Orabug: 39368718] {CVE-2026-31402}
 - xfrm: esp: avoid in-place decrypt on shared skb frags (Kuan-Ting Chen) [Orabug: 39344527] {CVE-2026-43284}
 - x86/CPU/AMD: Add a fix for AMD-SB-7052 (Prathyushi Nangia) [Orabug: 39344576] {CVE-2025-54518}
 - crypto: algif_aead - Fix minimum RX size check for decryption (Herbert Xu) [Orabug: 39250687,39331106] {CVE-2026-43077}
 - crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl (Herbert Xu) [Orabug:
 39250687,39331111] {CVE-2026-43078}
 - crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption (Herbert Xu) [Orabug:
 39250687,39300911] {CVE-2026-43033}
 - crypto: algif_aead - Revert to operating out-of-place (Herbert Xu) [Orabug: 39250687,39283868,39292250] {CVE-2026-31431}
 - crypto: algif_aead - use memcpy_sglist() instead of null skcipher (Eric Biggers) [Orabug: 39250687] {CVE-2026-31431}
 - x86/CPU: Fix FPDSS on Zen1 (Siddh Raman Pant) [Orabug: 39241225,39273723] {CVE-2026-31628}
 - SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf (Joshua Rogers) [Orabug: 38852342] {CVE-2025-71120}
 - net/sched: Enforce that teql can only be used as root qdisc (Jamal Hadi Salim) [Orabug: 38930950] {CVE-2026-23074}
 - macvlan: fix possible UAF in macvlan_forward_source() (Eric Dumazet) [Orabug: 38887731] {CVE-2026-23001}
 - macvlan: Use 'hash' iterators to simplify code (Christophe Jaillet) [Orabug: 38887731] {CVE-2026-23001}
 - macvlan: Add nodst option to macvlan type source (Jethro Beekman) [Orabug: 38887731] {CVE-2026-23001}
 - macvlan: observe an RCU grace period in macvlan_common_newlink() error path (Eric Dumazet) [Orabug:
 38970510,39188399] {CVE-2026-23209,CVE-2026-23273}
 - macvlan: fix error recovery in macvlan_common_newlink() (Eric Dumazet) [Orabug: 38970510] {CVE-2026-23209}
 - io_uring: fix filename leak in __io_openat_prep() (Prithvi Tambewagh) [Orabug: 39064937] {CVE-2025-68814}

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-2026-50281.html

Plugin Details

Severity: High

ID: 316003

File Name: oraclelinux_ELSA-2026-50281.nasl

Version: 1.2

Type: Local

Agent: unix

Published: 5/21/2026

Updated: 5/22/2026

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

Risk Information

VPR

Risk Factor: High

Score: 7.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-46333

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: cpe:/o:oracle:linux:8:10:baseos_patch, p-cpe:/a:oracle:linux:kernel-uek-container, p-cpe:/a:oracle:linux:kernel-uek-debug-devel, cpe:/o:oracle:linux:7, cpe:/o:oracle:linux:8, 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-container-debug, p-cpe:/a:oracle:linux:kernel-uek-tools, p-cpe:/a:oracle:linux:kernel-uek

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/20/2026

Vulnerability Publication Date: 5/15/2026

Reference Information

CVE: CVE-2026-46333