CVE-2020-0543: Canonical Ubuntu Linux

Medium severity, CVSS 5.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Incomplete cleanup from specific special register read operations in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 18.04 only; version 19.10 only; version 20.04 only
• Fedoraproject Fedora: version 31 only; version 32 only
• Intel Celeron 1000m: affected versions not specified
• Intel Celeron 1005m: affected versions not specified
• Intel Celeron 1007u: affected versions not specified
• Intel Celeron 1017u: affected versions not specified
• Intel Celeron 1019y: affected versions not specified
• Intel Celeron 1020e: affected versions not specified
• Intel Celeron 1020m: affected versions not specified
• Intel Celeron 1037u: affected versions not specified
• Intel Celeron 1047ue: affected versions not specified
• Intel Celeron 2955u: affected versions not specified
• Intel Celeron 2957u: affected versions not specified
• Intel Celeron 2970m: affected versions not specified
• Intel Celeron 2980u: affected versions not specified
• Intel Celeron 2981u: affected versions not specified
• Intel Celeron 3755u: affected versions not specified
• Intel Celeron 3765u: affected versions not specified
• Intel Celeron 3855u: affected versions not specified
• Intel Celeron 3865u: affected versions not specified
• Intel Celeron 3955u: affected versions not specified
• Intel Celeron 3965u: affected versions not specified
• Intel Celeron 3965y: affected versions not specified
• Intel Celeron 5305u: affected versions not specified
• Intel Celeron 725c: affected versions not specified
• and 669 more

Published 2020-06-15. Last modified 2026-06-17.