CVE-2022-50230

MEDIUM

5.5

Beschreibung

In the Linux kernel, the following vulnerability has been resolved: arm64: set UXN on swapper page tables [ This issue was fixed upstream by accident in c3cee924bd85 ("arm64: head: cover entire kernel image in initial ID map") as part of a large refactoring of the arm64 boot flow. This simple fix is therefore preferred for -stable backporting ] On a system that implements FEAT_EPAN, read/write access to the idmap is denied because UXN is not set on the swapper PTEs. As a result, idmap_kpti_install_ng_mappings panics the kernel when accessing __idmap_kpti_flag. Fix it by setting UXN on these PTEs.

CVE Details

CVSS v3.1 Bewertung5.5

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AngriffsvektorLOCAL

KomplexitatLOW

Erforderliche PrivilegienLOW

BenutzerinteraktionNONE

Veroffentlicht6/18/2025

Zuletzt geandert11/19/2025

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

linux:linux_kernel

Referenzen

https://git.kernel.org/stable/c/9283e708a9b8529e7aafac9ab5c5c79a9fab8846(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/c3cee924bd855184d15bc4aa6088dcf8e2c1394c(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

IOC Korrelationen

Keine Korrelationen erfasst

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