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Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2026-50306)

critical Nessus Plugin ID 320170

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-2026-50306 advisory.

 - arm64: errata: Mitigate TLBI errata on various Arm CPUs (Mark Rutland) [Orabug: 39017592] {CVE-2025-10263}
 - ptrace: slightly saner 'get_dumpable()' logic (Linus Torvalds) [Orabug: 39384275,39391459] {CVE-2026-46333}
 - net: skbuff: propagate shared-frag marker through frag-transfer helpers (Hyunwoo Kim) [Orabug:
 39368828,39441326] {CVE-2026-43503,CVE-2026-46300}
 - net: skbuff: preserve shared-frag marker during coalescing (William Bowling) [Orabug: 39368828] {CVE-2026-46300}
 - nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (Jeff Layton) [Orabug: 39167617,39368718] {CVE-2026-31402}
 - scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() (Maurizio Lombardi) [Orabug:
 38985173,39368732] {CVE-2026-23216}
 - scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (Maurizio Lombardi) [Orabug:
 38970455,39368774] {CVE-2026-23193}
 - xfrm: esp: avoid in-place decrypt on shared skb frags (Kuan-Ting Chen) [Orabug: 39334580,39367147] {CVE-2026-43284}
 - x86/CPU/AMD: Add a fix for AMD-SB-7052 (Prathyushi Nangia) [Orabug: 39218897] {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 - snapshot IV for async AEAD requests (Douya Le) [Orabug: 39250687,39452217] {CVE-2026-46028}
 - 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}

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-2026-50306.html

Plugin Details

Severity: Critical

ID: 320170

File Name: oraclelinux_ELSA-2026-50306.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/9/2026

Updated: 6/9/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2025-10263

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

Temporal Vector: CVSS:3.0/E:U/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 Ease: No known exploits are available

Patch Publication Date: 6/7/2026

Vulnerability Publication Date: 6/9/2026

Reference Information

CVE: CVE-2025-10263