9.3

CVE-2026-72278

KVM: arm64: nv: Re-translate VNCR before injecting abort

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

KVM: arm64: nv: Re-translate VNCR before injecting abort

KVM faults in the VNCR page with FOLL_WRITE whenever the guest aborts
for a write, similar to how a regular stage-2 mapping is handled. It is
entirely possible that the guest reads from the VNCR before writing to
it, in which case the PFN could only be read-only.

Invalidate the VNCR TLB and re-fetch the translation upon taking a VNCR
abort, allowing the host mapping to be faulted in for write the second
time around. Interestingly enough, this also satisfies the ordering
requirements of FEAT_ETS2/3 between descriptor updates and MMU faults.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 2a359e072596fcb2e9e85017a865e3618a2fe5b5
Version < ea7a76d7d614b5f82b4d0785f9af3550e860a71a
Status affected
Version 2a359e072596fcb2e9e85017a865e3618a2fe5b5
Version < 0a5dd8cf4d58ea28da132c2097cd1c525302ac48
Status affected
Version 2a359e072596fcb2e9e85017a865e3618a2fe5b5
Version < bb645aa0a4caeaf7f9cd32e9a948594d434c1a8f
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.16
Status affected
Version 0
Version < 6.16
Status unaffected
Version <= 6.18.*
Version 6.18.40
Status unaffected
Version <= 7.1.*
Version 7.1.5
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 0.19% 0.094
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/ea7a76d7d614b5f82b4d0785f9af3550e860a71a
https://git.kernel.org/stable/c/0a5dd8cf4d58ea28da132c2097cd1c525302ac48
https://git.kernel.org/stable/c/bb645aa0a4caeaf7f9cd32e9a948594d434c1a8f