cve-2024-36912
Vulnerability from cvelistv5
Published
2024-05-30 15:29
Modified
2024-12-19 09:01
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Track decrypted status in vmbus_gpadl In CoCo VMs it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. In order to make sure callers of vmbus_establish_gpadl() and vmbus_teardown_gpadl() don't return decrypted/shared pages to allocators, add a field in struct vmbus_gpadl to keep track of the decryption status of the buffers. This will allow the callers to know if they should free or leak the pages.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1999644d95194d4a58d3e80ad04ce19220a01a81
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/211f514ebf1ef5de37b1cf6df9d28a56cfd242ca
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e62341f5c45b27519b7d193bcc32ada416ad9d8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bfae56be077ba14311509e70706a13458f87ea99
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1999644d95194d4a58d3e80ad04ce19220a01a81
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/211f514ebf1ef5de37b1cf6df9d28a56cfd242ca
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8e62341f5c45b27519b7d193bcc32ada416ad9d8
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bfae56be077ba14311509e70706a13458f87ea99
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website

To clipboard 

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