CVE-2023-53769
virt/coco/sev-guest: Double-buffer messages
CVSS Score
9.3
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: virt/coco/sev-guest: Double-buffer messages The encryption algorithms read and write directly to shared unencrypted memory, which may leak information as well as permit the host to tamper with the message integrity. Instead, copy whole messages in or out as needed before doing any computation on them.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 8, 2025 |
| Last Updated | Aug 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
d5af44dde5461d125d1602ac913ab5c6bdf09b8b < 577a64725bfd77645986168e953d405067ee565b d5af44dde5461d125d1602ac913ab5c6bdf09b8b < c27dafc4aa50a29ec927b3aa84ac7b430071f682 d5af44dde5461d125d1602ac913ab5c6bdf09b8b < 4b69c63f716cfda38e1210e65b68f67f6cee2ddf d5af44dde5461d125d1602ac913ab5c6bdf09b8b < 965006103a14703cc42043bbf9b5e0cdf7a468ad
Linux / Linux
5.19
References
git.kernel.org: https://git.kernel.org/stable/c/577a64725bfd77645986168e953d405067ee565b git.kernel.org: https://git.kernel.org/stable/c/c27dafc4aa50a29ec927b3aa84ac7b430071f682 git.kernel.org: https://git.kernel.org/stable/c/4b69c63f716cfda38e1210e65b68f67f6cee2ddf git.kernel.org: https://git.kernel.org/stable/c/965006103a14703cc42043bbf9b5e0cdf7a468ad