CVE-2022-42335: x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is…

PriorityP341high7.8CVSS 3.1

AVLACLPRLUINSUCHIHAH

EPSS

0.26%

18.0th percentile

x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handling it is possible for a guest with a PCI device passed through to cause the hypervisor to access an arbitrary pointer partially under guest control.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
debian	xen	< xen 4.17.1+2-gb773c48e36-1 (bookworm)	xen 4.17.1+2-gb773c48e36-1 (bookworm)
fedoraproject	fedora	—	—
xen	xen	—	—
xen	xen	>= 0 < 4.17.1+2-gb773c48e36-1	4.17.1+2-gb773c48e36-1
xen	xen	>= 0 < 4.17.1+2-gb773c48e36-1	4.17.1+2-gb773c48e36-1
xen	xen	>= 0 < 4.17.1+2-gb773c48e36-1	4.17.1+2-gb773c48e36-1

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

osv7.8HIGH

vendor_debian7.8HIGH

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