CVE-2023-53769
published 2025-12-08CVE-2023-53769: In the Linux kernel, the following vulnerability has been resolved: virt/coco/sev-guest: Double-buffer messages The encryption algorithms read and write…
PriorityP342critical9.3CVSS 3.1
AVLACLPRNUINSCCHIHAH
EPSS
0.10%
0.9th percentile
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.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.37-1 (bookworm) | linux 6.1.37-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= d5af44dde5461d125d1602ac913ab5c6bdf09b8b < 577a64725bfd77645986168e953d405067ee565b | 577a64725bfd77645986168e953d405067ee565b |
| linux | linux | >= d5af44dde5461d125d1602ac913ab5c6bdf09b8b < c27dafc4aa50a29ec927b3aa84ac7b430071f682 | c27dafc4aa50a29ec927b3aa84ac7b430071f682 |
| linux | linux | >= d5af44dde5461d125d1602ac913ab5c6bdf09b8b < 4b69c63f716cfda38e1210e65b68f67f6cee2ddf | 4b69c63f716cfda38e1210e65b68f67f6cee2ddf |
| linux | linux | >= d5af44dde5461d125d1602ac913ab5c6bdf09b8b < 965006103a14703cc42043bbf9b5e0cdf7a468ad | 965006103a14703cc42043bbf9b5e0cdf7a468ad |
| linux | linux_kernel | >= 0 < 6.1.37-1 | 6.1.37-1 |
| linux | linux_kernel | >= 0 < 6.3.7-1 | 6.3.7-1 |
| linux | linux_kernel | >= 0 < 6.3.7-1 | 6.3.7-1 |
| linux | linux_kernel | >= 5.19.0 < 6.1.28 | 6.1.28 |
| linux | linux_kernel | >= 6.2.0 < 6.2.15 | 6.2.15 |
| linux | linux_kernel | >= 6.3.0 < 6.3.2 | 6.3.2 |
CVSS provenance
nvdv3.19.3CRITICALCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
vendor_redhat6.0MEDIUM
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Red Hat
kernel: virt/coco/sev-guest: Double-buffer messages
vendor_redhat·2025-12-08·CVSS 6.0
CVE-2023-53769 [MEDIUM] CWE-319 kernel: virt/coco/sev-guest: Double-buffer messages
kernel: virt/coco/sev-guest: Double-buffer messages
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.
Statement: This vulnerability is rated as Moderate by Red Hat. The vulnerability primarily impacts confidentiality and integrity, because plaintext or intermediate values can be observed via shared unencrypted memory and as such there can be host-controlled modifications of the message buffer that can influence what is encrypted or verified and decrypted. Impact on availab
Debian
CVE-2023-53769: linux - In the Linux kernel, the following vulnerability has been resolved: virt/coco/s...
vendor_debian·2023
CVE-2023-53769 CVE-2023-53769: linux - In the Linux kernel, the following vulnerability has been resolved: virt/coco/s...
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.
Scope: local
bookworm: resolved (fixed in 6.1.37-1)
bullseye: resolved
forky: resolved (fixed in 6.3.7-1)
sid: resolved (fixed in 6.3.7-1)
trixie: resolved (fixed in 6.3.7-1)
OSV
virt/coco/sev-guest: Double-buffer messages
osv·2025-12-08
CVE-2023-53769 virt/coco/sev-guest: Double-buffer messages
virt/coco/sev-guest: Double-buffer messages
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.
OSV
CVE-2023-53769: In the Linux kernel, the following vulnerability has been resolved: virt/coco/sev-guest: Double-buffer messages The encryption algorithms read and wri
osv·2025-12-08
CVE-2023-53769 CVE-2023-53769: In the Linux kernel, the following vulnerability has been resolved: virt/coco/sev-guest: Double-buffer messages The encryption algorithms read and wri
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.
GHSA
GHSA-3jg5-f6fr-mw89: In the Linux kernel, the following vulnerability has been resolved:
virt/coco/sev-guest: Double-buffer messages
The encryption algorithms read and w
ghsa_unreviewed·2025-12-08
CVE-2023-53769 GHSA-3jg5-f6fr-mw89: In the Linux kernel, the following vulnerability has been resolved:
virt/coco/sev-guest: Double-buffer messages
The encryption algorithms read and w
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.
No detection rules found.
No public exploits indexed.
2025-12-08
Published