CVE-2023-53769
Critical
Description
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.
SeverityCritical
CVSS9.3
Exploit probability—
Product
Linux
PublishedDec 8, 2025
First seenDec 8, 2025
How to fix
Update
- Linux Linux577a64725bfd77645986168e953d405067ee565b, c27dafc4aa50a29ec927b3aa84ac7b430071f682, 4b69c63f716cfda38e1210e65b68f67f6cee2ddf, 965006103a14703cc42043bbf9b5e0cdf7a468ad or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | d5af44dde5461d125d1602ac913ab5c6bdf09b8b ≤ v < 577a64725bfd77645986168e953d405067ee565b, d5af44dde5461d125d1602ac913ab5c6bdf09b8b ≤ v < c27dafc4aa50a29ec927b3aa84ac7b430071f682, d5af44dde5461d125d1602ac913ab5c6bdf09b8b ≤ v < 4b69c63f716cfda38e1210e65b68f67f6cee2ddf, d5af44dde5461d125d1602ac913ab5c6bdf09b8b ≤ v < 965006103a14703cc42043bbf9b5e0cdf7a468ad, 5.19 | 577a64725bfd77645986168e953d405067ee565b, c27dafc4aa50a29ec927b3aa84ac7b430071f682, 4b69c63f716cfda38e1210e65b68f67f6cee2ddf, 965006103a14703cc42043bbf9b5e0cdf7a468ad |
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