Vulnerability in Linux

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund26 Oct 2026WID-SEC-2026-4181

  Linux Kernel: Multiple vulnerabilities allow an unspecified attack Translated from German

  Risk mediumCVE-2026-99098CVE-2026-99091CVE-2026-99097+9 more CVEs

[ References ]References

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