CVE-2025-40174 | BDVDB-2026-301799 Detail

Description#

In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix SMP ordering in switch_mm_irqs_off() Stephen noted that it is possible to not have an smp_mb() between the loaded_mm store and the tlb_gen load in switch_mm(), meaning the ordering against flush_tlb_mm_range() goes out the window, and it becomes possible for switch_mm() to not observe a recent tlb_gen update and fail to flush the TLBs. [ dhansen: merge conflict fixed by Ingo ]

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Exploit#

History#

1. Version 12025-11-12Record published in the CVE List.
2. Version 22026-08-05Most recent update recorded in the CVE List.