CVE-2024-36912
Microsoft Hyper-V Linux Driver Memory Decryption Information Leak
Description
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.
INFO
Published Date :
May 30, 2024, 4:15 p.m.
Last Modified :
April 1, 2025, 6:35 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.2
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-36912.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-36912 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-36912 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Apr. 01, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.8.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.31 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.1.91 Added Reference Type CVE: https://git.kernel.org/stable/c/1999644d95194d4a58d3e80ad04ce19220a01a81 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/1999644d95194d4a58d3e80ad04ce19220a01a81 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/211f514ebf1ef5de37b1cf6df9d28a56cfd242ca Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/211f514ebf1ef5de37b1cf6df9d28a56cfd242ca Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/8e62341f5c45b27519b7d193bcc32ada416ad9d8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8e62341f5c45b27519b7d193bcc32ada416ad9d8 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/bfae56be077ba14311509e70706a13458f87ea99 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/bfae56be077ba14311509e70706a13458f87ea99 Types: Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/1999644d95194d4a58d3e80ad04ce19220a01a81 Added Reference https://git.kernel.org/stable/c/211f514ebf1ef5de37b1cf6df9d28a56cfd242ca Added Reference https://git.kernel.org/stable/c/8e62341f5c45b27519b7d193bcc32ada416ad9d8 Added Reference https://git.kernel.org/stable/c/bfae56be077ba14311509e70706a13458f87ea99 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 03, 2024
Action Type Old Value New Value Added CWE CISA-ADP CWE-1258 Added CVSS V3.1 CISA-ADP AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 30, 2024
Action Type Old Value New Value Added Description 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. Added Reference kernel.org https://git.kernel.org/stable/c/1999644d95194d4a58d3e80ad04ce19220a01a81 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8e62341f5c45b27519b7d193bcc32ada416ad9d8 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/bfae56be077ba14311509e70706a13458f87ea99 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/211f514ebf1ef5de37b1cf6df9d28a56cfd242ca [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-36912 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-36912
weaknesses.