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Technical advisory

USN-8817-1: Linux kernel vulnerabilities

Official source
EudorIA operational summary

What it means

Priority 70/100

Ubuntu Security Notice USN-8817-1 segnala diverse vulnerabilità nel kernel Linux, tra cui CVE-2025-10263 relativa a un problema di gestione della memoria su processori Arm. Le vulnerabilità interessano diversi sottosistemi del kernel, tra cui B.A.T.M.A.N., IPv4, IPv6 e Netfilter. La patch è disponibile per vari kernel, tra cui quelli per Azure, GCP, IBM e Raspberry Pi. La correzione richiede un aggiornamento del sistema e un riavvio.

Why it matters

Le vulnerabilità possono permettere a un attaccante locale di bypassare protezioni di memoria o elevare privilegi, minacciando la sicurezza delle infrastrutture IT delle PMI. L'aggiornamento è essenziale per prevenire sfruttamenti e garantire la continuità operativa.

Recommended actions

  1. Applicare le patch disponibili per i kernel vulnerabili (es. linux-image-6.8.0-1068.76)
  2. Riavviare i sistemi dopo l'applicazione delle patch
  3. Verificare l'installazione di moduli terzi e ricompilarli se necessario
  4. Monitorare i log di sistema per rilevare accessi anomali o comportamenti sospetti
  5. Eseguire un aggiornamento completo del sistema per garantire la sicurezza
  6. Verificare l'uso di sistemi con kernel FIPS certificati per applicazioni critiche

Potential operational benefits

  • Riduzione della superficie esposta alle vulnerabilità kernel
  • Miglioramento della protezione contro attacchi locali
  • Garanzia della continuità operativa e della conformità normativa
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 A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges.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; - B.A.T.M.A.N. meshing protocol; - HSR network protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53131, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-63886, 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-2026-64000, 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 17:01
MITRE ATT&CK
T1190, T1078, T1486
CVE
CVE-2025-10263, CVE-2026-53131, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-63886, 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-2026-64000, 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