-

CVE-2022-50230

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.

Verknüpft mit AI von unstrukturierten Daten zu bestehenden CPE der NVD
This information is available to logged-in users.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
VendorLinux
≫
Product Linux
Default Statusunaffected
Version < 9283e708a9b8529e7aafac9ab5c5c79a9fab8846
Version 18107f8a2df6bf1c6cac8d0713f757f866d5af51
Status affected
Version < c3cee924bd855184d15bc4aa6088dcf8e2c1394c
Version 18107f8a2df6bf1c6cac8d0713f757f866d5af51
Status affected
VendorLinux
≫
Product Linux
Default Statusaffected
Version 5.13
Status affected
Version < 5.13
Version 0
Status unaffected
Version <= 5.19.*
Version 5.19.1
Status unaffected
Version <= *
Version 6.0
Status unaffected
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.03% 0.059
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string