2560850 – (CVE-2026-99099) CVE-2026-99099 kernel: x86/CPU/AMD: Fix AMD TLBI Erratum #1718

Bug 2560850 (CVE-2026-99099) - CVE-2026-99099 kernel: x86/CPU/AMD: Fix AMD TLBI Erratum #1718

Summary: CVE-2026-99099 kernel: x86/CPU/AMD: Fix AMD TLBI Erratum #1718

Keywords:
Status:	NEW
Alias:	CVE-2026-99099
Product:	Security Response
Classification:	Other
Component:	vulnerability
Sub Component:
Version:	unspecified
Hardware:	All
OS:	Linux
Priority:	medium
Severity:	medium
Target Milestone:	---
Assignee:	Product Security DevOps Team
QA Contact:
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2026-10-26 15:16 UTC by OSIDB Bzimport
Modified:	2026-10-27 07:44 UTC (History)
CC List:	17 users (show)
Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments	(Terms of Use)

Description OSIDB Bzimport 2026-10-26 15:16:07 UTC

In the Linux kernel, the following vulnerability has been resolved:

x86/CPU/AMD: Fix AMD TLBI Erratum #1718

The processor may fail to invalidate a TLB entry while executing an
INVLPGB/TLBSYNC instruction pair.

Detect the erratum and apply a software workaround when a microcode fix
is not present.

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