Riskcovery

CVE-2023-53769

virt/coco/sev-guest: Double-buffer messages

State
Published
Severity
9.3 Critical
Published
Dec 8, 2025
Updated
Aug 5, 2026
Reserved
Dec 8, 2025

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.19.3 CriticalCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • d5af44dde5461d125d1602ac913ab5c6bdf09b8b to before 577a64725bfd77645986168e953d405067ee565bAffected
  • d5af44dde5461d125d1602ac913ab5c6bdf09b8b to before c27dafc4aa50a29ec927b3aa84ac7b430071f682Affected
  • d5af44dde5461d125d1602ac913ab5c6bdf09b8b to before 4b69c63f716cfda38e1210e65b68f67f6cee2ddfAffected
  • d5af44dde5461d125d1602ac913ab5c6bdf09b8b to before 965006103a14703cc42043bbf9b5e0cdf7a468adAffected
LinuxLinux
  • 5.19Affected
  • before 5.19Not affected
  • 6.1.28 through 6.1.*Not affected
  • 6.2.15 through 6.2.*Not affected
  • 6.3.2 through 6.3.*Not affected
  • 6.4 and laterNot affected

References

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