9.3

CVE-2026-63938

KVM: SEV: Check PSC request indices against the actual size of the buffer

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

KVM: SEV: Check PSC request indices against the actual size of the buffer

When processing Page State Change (PSC) requests, validate the PSC buffer
against the effective size of the scratch area, which could be less than
the maximum size if the guest provided a pointer that isn't exactly at the
start of the GHCB shared buffer.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 9b54e248d2644be71cb394eb85f31ad99e023a05
Version < 5198f70c09a5f6e9e5f5a0a2c6b388f24294b176
Status affected
Version 9b54e248d2644be71cb394eb85f31ad99e023a05
Version < 75c8d1d7291268b479794fba5808971dc2f5eaf3
Status affected
Version 9b54e248d2644be71cb394eb85f31ad99e023a05
Version < 505a3b94535583e4265360e2621734e355ef263d
Status affected
Version 9b54e248d2644be71cb394eb85f31ad99e023a05
Version < 121d88de56bc5c0ba0ce2f6381af67f948a7e7c1
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.11
Status affected
Version 0
Version < 6.11
Status unaffected
Version <= 6.12.*
Version 6.12.93
Status unaffected
Version <= 6.18.*
Version 6.18.35
Status unaffected
Version <= 7.0.*
Version 7.0.12
Status unaffected
Version <= *
Version 7.1
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 0.18% 0.078
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/5198f70c09a5f6e9e5f5a0a2c6b388f24294b176
https://git.kernel.org/stable/c/75c8d1d7291268b479794fba5808971dc2f5eaf3
https://git.kernel.org/stable/c/505a3b94535583e4265360e2621734e355ef263d
https://git.kernel.org/stable/c/121d88de56bc5c0ba0ce2f6381af67f948a7e7c1