CVE-2022-23035

published 2022-01-25

CVE-2022-23035: Insufficient cleanup of passed-through device IRQs The management of IRQs associated with physical devices exposed to x86 HVM guests involves an iterative…

Priority P4 16 medium 4.6 CVSS 3.1

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

Insufficient cleanup of passed-through device IRQs The management of IRQs associated with physical devices exposed to x86 HVM guests involves an iterative operation in particular when cleaning up after the guest's use of the device. In the case where an interrupt is not quiescent yet at the time this cleanup gets invoked, the cleanup attempt may be scheduled to be retried. When multiple interrupts are involved, this scheduling of a retry may get erroneously skipped. At the same time pointers may get cleared (resulting in a de-reference of NULL) and freed (resulting in a use-after-free), while other code would continue to assume them to be valid.

Affected

8 ranges

Vendor	Product	Version range	Fixed in
debian	debian_linux	—	—
debian	xen	< xen 4.16.0+51-g0941d6cb-1 (bookworm)	xen 4.16.0+51-g0941d6cb-1 (bookworm)
fedoraproject	fedora	—	—
xen	xen	>= 0 < 4.14.4+74-gd7b22226b5-1	4.14.4+74-gd7b22226b5-1
xen	xen	>= 0 < 4.16.0+51-g0941d6cb-1	4.16.0+51-g0941d6cb-1
xen	xen	>= 0 < 4.16.0+51-g0941d6cb-1	4.16.0+51-g0941d6cb-1
xen	xen	>= 0 < 4.16.0+51-g0941d6cb-1	4.16.0+51-g0941d6cb-1
xen	xen	>= 4.6.0	—

CVSS provenance

nvd v3.1 4.6 MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v2.0 4.7 MEDIUM AV:L/AC:M/Au:N/C:N/I:N/A:C

osv 4.6 MEDIUM

vendor_debian 4.6 MEDIUM

vendor_redhat 4.6 MEDIUM

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CWE-459