Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2024-35939

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
19/05/2024
Last modified:
24/09/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> dma-direct: Leak pages on dma_set_decrypted() failure<br /> <br /> On TDX it is possible for the untrusted host to cause<br /> set_memory_encrypted() or set_memory_decrypted() to fail such that an<br /> error is returned and the resulting memory is shared. Callers need to<br /> take care to handle these errors to avoid returning decrypted (shared)<br /> memory to the page allocator, which could lead to functional or security<br /> issues.<br /> <br /> DMA could free decrypted/shared pages if dma_set_decrypted() fails. This<br /> should be a rare case. Just leak the pages in this case instead of<br /> freeing them.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.10 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): High

Base Score 3.x
7.10
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.1.86 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.27 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.8.6 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools