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Technical advisory

USN-8801-1: Linux kernel (Azure CVM) vulnerabilities

Official source
EudorIA operational summary

What it means

Priority 45/100

Ubuntu Security Notice USN-8801-1 segnala vulnerabilità nel kernel Linux (Azure CVM). Le vulnerabilità consentono a un attaccante locale di bypassare protezioni della memoria o elevare privilegi. Le patch sono disponibili per linux-azure-fde e derivati. Nessun sfruttamento attivo in rete confermato.

Why it matters

Le vulnerabilità possono compromettere la sicurezza di sistemi cloud basati su Azure CVM, mettendo a rischio dati sensibili e operatività aziendale. La mancanza di patch potrebbe portare a un accesso non autorizzato e a un potenziale elevamento di privilegi.

Recommended actions

  1. Applicare le patch disponibili per linux-azure-fde e derivati
  2. Riavviare il sistema dopo l'aggiornamento
  3. Riconfigurare i moduli kernel terzi per adattarsi alla nuova versione
  4. Verificare la presenza di aggiornamenti automatici per i metapacchetti kernel
  5. Monitorare i log di sistema per eventuali errori post-aggiornamento

Potential operational benefits

  • Riduzione della superficie esposta
  • Prevenzione di accessi non autorizzati
  • Miglioramento della conformità alle normative di sicurezza
Indications to confirm against the customer's technical and organisational perimeter.
Relevant controlsPatch managementSegmentazione di reteFirewall NGFW / IPSMonitoraggio / SIEM
AudienceITSOC
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 A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges.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: - Character device driver; - Networking core; - IPv6 networking; - Unix domain sockets; (CVE-2026-52938, CVE-2026-53325, CVE-2026-53361, CVE-2026-53362)

Source
Ubuntu Security Notices
Publishing entity
Ubuntu Security
Entity type
vendor security
Area
Global
Original language
en · translation in preparation
Publication
22/09/2026 12:17
MITRE ATT&CK
T1562
CVE
CVE-2025-10263, CVE-2026-52938, CVE-2026-53325, CVE-2026-53361, CVE-2026-53362
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