Description
This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Analysis
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Remediation
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References
History
Thu, 19 Dec 2024 11:45:00 +0000
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Thu, 19 Dec 2024 11:15:00 +0000
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| Description | In the Linux kernel, the following vulnerability has been resolved: vfio/type1: Unpin zero pages There's currently a reference count leak on the zero page. We increment the reference via pin_user_pages_remote(), but the page is later handled as an invalid/reserved page, therefore it's not accounted against the user and not unpinned by our put_pfn(). Introducing special zero page handling in put_pfn() would resolve the leak, but without accounting of the zero page, a single user could still create enough mappings to generate a reference count overflow. The zero page is always resident, so for our purposes there's no reason to keep it pinned. Therefore, add a loop to walk pages returned from pin_user_pages_remote() and unpin any zero pages. | This CVE ID has been rejected or withdrawn by its CVE Numbering Authority. |
| Title | vfio/type1: Unpin zero pages | kernel: vfio/type1: Unpin zero pages |
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Subscriptions
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MITRE
Status: REJECTED
Assigner: Linux
Published:
Updated: 2024-12-19T11:01:44.556Z
Reserved: 2024-05-03T14:55:07.145Z
Link: CVE-2022-48700
Vulnrichment
Updated:
NVD
Status : Rejected
Published: 2024-05-03T16:15:08.500
Modified: 2024-12-19T11:15:30.050
Link: CVE-2022-48700
Redhat
OpenCVE Enrichment
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Weaknesses
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