USN-8728-3: Linux kernel (Oracle) vulnerabilities — USN-8728-3

Summary

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 A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges.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) It was discovered that some AMD Zen 2…

Timeline

Published by source

2026-09-29

Risk context

• Reported severity or threat level: medium.
• Review exposure for the affected product or family: Ubuntu.

Product

Ubuntu

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

USN-8728-3

Source

Ubuntu

Vendor

Ubuntu

Published by source

2026-09-29

Last source activity

2026-09-29

Additional identifiers

CVE-2025-10263

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.