CVSS 4.0
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, само при определена конфигурация или състояние на системата, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
Cloud Hypervisor is a Virtual Machine Monitor for Cloud workloads. From version 21.0 to before version 51.2, a guest can cause a use-after-free in the cloud-hypervisor process by submitting two virtio-block descriptor chains that reuse the same head_index while asynchronous block I/O is enabled (e.g. io_uring, aio). When the kernel completes the duplicate operation before the original, the completion path frees a bounce buffer that the kernel is still actively reading from or writing to, corrupting the freed memory. This issue has been patched in versions 51.2 and 52.0.
Засегнати продукти
- cloud-hypervisor cloud-hypervisor: >= 21.0, < 51.2
Вид слабост
История
- 9 юни 2026 Публикувано
Други уязвимости в cloud-hypervisor cloud-hypervisor
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-45782
- https://nvd.nist.gov/vuln/detail/CVE-2026-45782
- https://github.com/cloud-hypervisor/cloud-hypervisor/security/advisories/GHSA-f47p-p25q-83rh
- https://github.com/cloud-hypervisor/cloud-hypervisor/pull/8220
- https://github.com/cloud-hypervisor/cloud-hypervisor/commit/1314ac883c641f1045bbb06dec0de045a3894baa
- https://github.com/cloud-hypervisor/cloud-hypervisor/releases/tag/v51.2
- https://github.com/cloud-hypervisor/cloud-hypervisor/releases/tag/v52.0