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 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.

• CWE-459

• http://www.openwall.com/lists/oss-security/2022/01/25/4Mailing List, Patch, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3/
• https://security.gentoo.org/glsa/202208-23Third Party Advisory
• https://www.debian.org/security/2022/dsa-5117Third Party Advisory
• https://xenbits.xenproject.org/xsa/advisory-395.txtVendor Advisory
• http://www.openwall.com/lists/oss-security/2022/01/25/4Mailing List, Patch, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3/
• https://security.gentoo.org/glsa/202208-23Third Party Advisory
• https://www.debian.org/security/2022/dsa-5117Third Party Advisory
• https://xenbits.xenproject.org/xsa/advisory-395.txtVendor Advisory

Published

Jan 25, 2022

Last Modified

Jun 17, 2026

Status

Modified

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