- Vulnerability/
- CVE-2024-57793
CVE-2024-57793: virt: tdx-guest: Just leak decrypted memory on unrecoverable errors
First published: Sat Jan 11 2025(Updated: )
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().
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Kernel-devel | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
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Reference Links
- https://git.kernel.org/stable/c/1429ae7b7d4759a1e362456b8911c701bae655b4
- https://git.kernel.org/stable/c/27834971f616c5e154423c578fa95e0444444ce1
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-57793
- https://nvd.nist.gov/vuln/detail/CVE-2024-57793
- https://launchpad.net/bugs/cve/CVE-2024-57793
- https://security-tracker.debian.org/tracker/CVE-2024-57793
- https://ubuntu.com/security/CVE-2024-57793
- https://git.kernel.org/linus/27834971f616c5e154423c578fa95e0444444ce1
Frequently Asked Questions
What is the severity of CVE-2024-57793?
CVE-2024-57793 is considered a high severity vulnerability due to its potential to leak decrypted memory.
How do I fix CVE-2024-57793?
To fix CVE-2024-57793, update your Linux kernel to the latest version where the vulnerability has been patched.
What are the potential impacts of CVE-2024-57793?
The potential impacts of CVE-2024-57793 include unauthorized memory access and exposure of sensitive information.
Which versions of the Linux kernel are affected by CVE-2024-57793?
CVE-2024-57793 affects versions of the Linux kernel prior to the implementation of the relevant security patch.
Is CVE-2024-57793 specific to certain virtualization environments?
Yes, CVE-2024-57793 is specifically related to CoCo VMs in which the untrusted host can exploit the vulnerability.
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