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CVE-2025-40174

x86/mm: Fix SMP ordering in switch_mm_irqs_off()

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 ]
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 209954cbc7d0ce1a190fc725d20ce303d74d2680
Version < 0fe5e3f5fb75c5d88dad24dece3ee75e9d87adeb
Status affected
Version 209954cbc7d0ce1a190fc725d20ce303d74d2680
Version < 83b0177a6c4889b3a6e865da5e21b2c9d97d0551
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.14
Status affected
Version 0
Version < 6.14
Status unaffected
Version <= 6.17.*
Version 6.17.5
Status unaffected
Version <= *
Version 6.18
Status unaffected
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.03% 0.073
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
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