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CVE-2025-40293

iommufd: Don't overflow during division for dirty tracking

In the Linux kernel, the following vulnerability has been resolved:

iommufd: Don't overflow during division for dirty tracking

If pgshift is 63 then BITS_PER_TYPE(*bitmap->bitmap) * pgsize will overflow
to 0 and this triggers divide by 0.

In this case the index should just be 0, so reorganize things to divide
by shift and avoid hitting any overflows.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version < 07105e61882ff4a7d58db63cc5f9e90c6c60506c
Status affected
Version 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version < 4c8a4f1d34eced168cc0b3a3dfe7b6dcc2090f69
Status affected
Version 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version < de7f2c67ceb1941b05b04ac35458a03e93cc57b1
Status affected
Version 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version < dbf316fc90aa954dcd5440817f4b944627ed63e0
Status affected
Version 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version < cb30dfa75d55eced379a42fd67bd5fb7ec38555e
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.1
Status affected
Version 0
Version < 6.1
Status unaffected
Version <= 6.1.*
Version 6.1.159
Status unaffected
Version <= 6.6.*
Version 6.6.117
Status unaffected
Version <= 6.12.*
Version 6.12.58
Status unaffected
Version <= 6.17.*
Version 6.17.8
Status unaffected
Version <= *
Version 6.18
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.03% 0.091
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.