{"api_version":"1","generated_at":"2026-07-23T13:07:14+00:00","cve":"CVE-2023-53515","urls":{"html":"https://cve.report/CVE-2023-53515","api":"https://cve.report/api/cve/CVE-2023-53515.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-53515","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-53515"},"summary":{"title":"virtio-mmio: don't break lifecycle of vm_dev","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-mmio: don't break lifecycle of vm_dev\n\nvm_dev has a separate lifecycle because it has a 'struct device'\nembedded. Thus, having a release callback for it is correct.\n\nAllocating the vm_dev struct with devres totally breaks this protection,\nthough. Instead of waiting for the vm_dev release callback, the memory\nis freed when the platform_device is removed. Resulting in a\nuse-after-free when finally the callback is to be called.\n\nTo easily see the problem, compile the kernel with\nCONFIG_DEBUG_KOBJECT_RELEASE and unbind with sysfs.\n\nThe fix is easy, don't use devres in this case.\n\nFound during my research about object lifetime problems.","state":"PUBLISHED","assigner":"Linux","published_at":"2025-10-01 12:15:55","updated_at":"2026-04-06 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don't break lifecycle of vm_dev","CVE":"CVE-2023-53515","Year":"2023"},"notes":[{"CveYear":"2023","CveId":"53515","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-mmio: don't break lifecycle of vm_dev\n\nvm_dev has a separate lifecycle because it has a 'struct device'\nembedded. Thus, having a release callback for it is correct.\n\nAllocating the vm_dev struct with devres totally breaks this protection,\nthough. Instead of waiting for the vm_dev release callback, the memory\nis freed when the platform_device is removed. Resulting in a\nuse-after-free when finally the callback is to be called.\n\nTo easily see the problem, compile the kernel with\nCONFIG_DEBUG_KOBJECT_RELEASE and unbind with sysfs.\n\nThe fix is easy, don't use devres in this case.\n\nFound during my research about object lifetime problems.","Type":"Description","Title":"virtio-mmio: don't break lifecycle of vm_dev"}]}}}