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Technical advisory

USN-8818-1: Linux kernel vulnerabilities

Official source
EudorIA operational summary

What it means

Priority 70/100

Ubuntu ha rilasciato un aggiornamento di sicurezza (USN-8818-1) che include diversi fix per vulnerabilità del kernel Linux. Le vulnerabilità interessano vari sottosistemi, tra cui il sistema di file NFS, il protocollo B.A.T.M.A.N., e alcuni processori ARM. L'aggiornamento include patch per diverse versioni del kernel Linux, tra cui quelle per sistemi cloud e IoT. L'aggiornamento richiede un riavvio del sistema e la ricompilazione di eventuali moduli kernel terzi.

Why it matters

Le vulnerabilità potrebbero permettere a un attaccante locale di bypassare le protezioni della memoria o elevare i privilegi, minacciando la sicurezza e l'integrità del sistema. Per le PMI italiane che utilizzano sistemi Linux, è fondamentale applicare le patch per ridurre il rischio di attacchi e garantire la continuità operativa.

Potential operational benefits

  • Riduzione della superficie esposta alle vulnerabilità del kernel.
  • Miglioramento della sicurezza dei sistemi Linux utilizzati.
  • Riduzione del rischio di attacchi locali e di elevazione dei privilegi.
  • Miglioramento della conformità e della protezione dei dati sensibili.
Indications to confirm against the customer's technical and organisational perimeter.
Relevant controlsPatch managementSegmentazione di reteMonitoraggio / SIEMFirewall NGFW / IPSBackup & DR
AudienceITSOCCISO
Information centre

Translation in progress

Ubuntu Security

The official content is available in the original language. The Italian version will be published once automated checks are complete.

Text acquired from the source

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - B.A.T.M.A.N. meshing protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-53398, CVE-2026-63800, CVE-2026-63808, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64007, CVE-2026-64091)

Source
Ubuntu Security Notices
Publishing entity
Ubuntu Security
Entity type
vendor security
Area
Global
Original language
en · translation in preparation
Publication
24/09/2026 17:02
MITRE ATT&CK
T1059.001
CVE
CVE-2025-10263, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-53398, CVE-2026-63800, CVE-2026-63808, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64007, CVE-2026-64091
Technical scope

Affected products and versions

Verification in progress
Information not yet acquired.

The collector will check NVD and the available official vendor advisories.

Open the original source