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().
Metrics
Affected Vendors & Products
References
History
Tue, 14 Jan 2025 08:45:00 +0000
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cvssV3_1
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Sat, 11 Jan 2025 12:45:00 +0000
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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 |
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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
Vulnrichment
No data.
NVD
Status : Received
Published: 2025-01-11T13:15:29.593
Modified: 2025-01-11T13:15:29.593
Link: CVE-2024-57793
Redhat