CVE-2024-31146

published 2024-09-25

CVE-2024-31146: When multiple devices share resources and one of them is to be passed through to a guest, security of the entire system and of respective guests individually…

Priority P4 34 high 7.5 CVSS 3.1

AV L AC H PR H UI N S C C H I H A H

When multiple devices share resources and one of them is to be passed
through to a guest, security of the entire system and of respective
guests individually cannot really be guaranteed without knowing
internals of any of the involved guests. Therefore such a configuration
cannot really be security-supported, yet making that explicit was so far
missing.

Resources the sharing of which is known to be problematic include, but
are not limited to
- - PCI Base Address Registers (BARs) of multiple devices mapping to the
same page (4k on x86),
- - INTx lines.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
debian	xen	< xen 4.17.5+23-ga4e5191dc0-1 (bookworm)	xen 4.17.5+23-ga4e5191dc0-1 (bookworm)
xen	xen	>= 0 < 4.17.5+23-ga4e5191dc0-1	4.17.5+23-ga4e5191dc0-1
xen	xen	>= 0 < 4.19.1-1	4.19.1-1
xen	xen	>= 0 < 4.19.1-1	4.19.1-1

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

osv 7.5 HIGH

vendor_debian 7.5 HIGH

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CWE-400