9.3

CVE-2026-74573

iommu/arm-smmu-v3-iommufd: Require exactly one Stream ID for a vDEVICE

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

iommu/arm-smmu-v3-iommufd: Require exactly one Stream ID for a vDEVICE

arm_vsmmu_vsid_to_sid() maps a guest's vSID to a single physical Stream ID
taken from master->streams[0], assuming a device has exactly one stream. A
device with several streams gets only its first one mapped, so a guest vSID
invalidation cannot reach the others' ATC and IOTLB entries; a device with
none makes master->streams a ZERO_SIZE_PTR, read out of bounds.

Add an arm_vsmmu_vdevice_init() op to reject the vDEVICE with -EOPNOTSUPP
when master->num_streams is not one, rather than mapping it silently.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version d68beb276ba26cec47350a6d468e967673ee0c56
Version < 3808bab5d95ae79e333e11f6a73d178e084c645d
Status affected
Version d68beb276ba26cec47350a6d468e967673ee0c56
Version < 0acbc621341aca4eb94d9c2f43e1ab273ff088f0
Status affected
Version d68beb276ba26cec47350a6d468e967673ee0c56
Version < c3b8ee84a965058b41275069d4696f37a8b14bf6
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.13
Status affected
Version 0
Version < 6.13
Status unaffected
Version <= 6.18.*
Version 6.18.44
Status unaffected
Version <= 7.1.*
Version 7.1.8
Status unaffected
Version <= *
Version 7.2
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 0.13% 0.031
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 9.3 2.5 6
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/3808bab5d95ae79e333e11f6a73d178e084c645d
https://git.kernel.org/stable/c/0acbc621341aca4eb94d9c2f43e1ab273ff088f0
https://git.kernel.org/stable/c/c3b8ee84a965058b41275069d4696f37a8b14bf6