USN-8610-1: Linux kernel (Azure CVM) vulnerabilities

Sicherheitsmeldung mit Schweregrad noch nicht bewertet. Betroffene Kennungen: CVE-2022-49803, CVE-2022-49961, CVE-2022-50073, CVE-2022-50116, CVE-2022-50552. Technische Details im Tab „Originaltext“; empfohlene Schritte in der Checkliste.

Originaltext der Quelle (nicht übersetzt) – die deutsche Zusammenfassung findest du im Tab „Kurzfassung".

Maxim Suhanov discovered that the NTFS file system implementation in the Linux kernel did not properly validate file name length in certain situations, leading to an out-of-bounds read. An attacker could use this to construct a malicious NTFS image that, when mounted and operated on, could expose sensitive information (kernel memory). (CVE-2023-45896)

It was discovered that some AMD processors did not properly clear data in the floating point divider unit during speculative execution. A local attacker could use this to expose sensitive information. (CVE-2025-54505)

It was discovered that some AMD Zen 2 processors did not properly isolate shared resources in the operation cache. A local attacker could possibly use this issue to corrupt instructions executed at a higher privilege level, resulting in privilege escalation. (CVE-2025-54518)

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: - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - S390 architecture; - x86 architecture; - Block layer subsystem; - Cryptographic API; - ACPI drivers; - ATM drivers; - Drivers core; - Power management core; - DRBD Distributed Replicated Block Device drivers; - RNBD block device driver; - Bluetooth drivers; - Bus devices; - Character device driver; - TPM device driver; - Clocksource drivers; - Data acquisition framework and drivers; - CPU frequency scaling framework; - CPU idle management framework; …

Vollständiger Originalartikel ↗

• Betroffenheit im eigenen Stack prüfen (CVE-2022-49803, CVE-2022-49961, CVE-2022-50073, CVE-2022-50116, CVE-2022-50552): Versionen/Komponenten abgleichen.
• Originalquelle / Hersteller-Advisory lesen: https://ubuntu.com/security/notices/USN-8610-1
• Verfügbaren Patch oder Workaround einspielen und dokumentieren.