In the Linux kernel, the following vulnerability has been resolved: virt: tdx-guest: Just leak decrypted memory on unrecoverable errors In CoCo VMs it is possible for the untrusted host to cause 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. Leak the decrypted memory when set_memory_decrypted() fails, and don't need to print an error since set_memory_decrypted() will call WARN_ONCE().
History

Tue, 14 Jan 2025 08:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low


Sat, 11 Jan 2025 12:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: virt: tdx-guest: Just leak decrypted memory on unrecoverable errors In CoCo VMs it is possible for the untrusted host to cause 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. Leak the decrypted memory when set_memory_decrypted() fails, and don't need to print an error since set_memory_decrypted() will call WARN_ONCE().
Title virt: tdx-guest: Just leak decrypted memory on unrecoverable errors
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-01-11T12:39:47.347Z

Updated: 2025-01-11T12:39:47.347Z

Reserved: 2025-01-11T12:32:49.384Z

Link: CVE-2024-57793

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-01-11T13:15:29.593

Modified: 2025-01-11T13:15:29.593

Link: CVE-2024-57793

cve-icon Redhat

Severity : Low

Publid Date: 2025-01-11T00:00:00Z

Links: CVE-2024-57793 - Bugzilla