CVE-2026-99099 PUBLISHED

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

Assigner: Linux
Reserved: 25.09.2026 Published: 26.10.2026 Updated: 26.10.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 82378c6c2f435dba66145609de16bf44a9de6303 to e3e6779f77ab6f0a1aa80e24868d2d89f31053fe (excl.)
  • affected from 82378c6c2f435dba66145609de16bf44a9de6303 to 098d80b04d0fe02889c332d061db968f070b83a6 (excl.)
  • affected from 82378c6c2f435dba66145609de16bf44a9de6303 to 87db7795cbaaf636ae22ae031f4906db7bb77803 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.15 is affected
  • unaffected from 0 to 6.15 (excl.)
  • unaffected from 6.18.57 to 6.18.* (incl.)
  • unaffected from 7.2.11 to 7.2.* (incl.)
  • unaffected from 7.3 to * (incl.)

References