What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-26 · updated 2026-10-31

Description

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.

Affected products

• Linux: 6.15 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/098d80b04d0fe02889c332d061db968f070b83a6
• https://git.kernel.org/stable/c/87db7795cbaaf636ae22ae031f4906db7bb77803
• https://git.kernel.org/stable/c/e3e6779f77ab6f0a1aa80e24868d2d89f31053fe

Get alerted when CVE-2026-99099 or the next vulnerability affects your stack