synced 11 MIN AGO
01 Record

CVE-2023-53769

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

CriticalPUBLISHEDCNA: Linux
CNA base score9.3 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

02 Description

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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.10% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 0.9% of scored records. A rank, not a probability.
NVD base score
9.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD analysis status
Deferred. NVD last modified this record on 2026-08-04.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-12-08 01:19Z10 MO AGO
Last updated
2026-08-05 09:15Z2 MO AGO
Reserved
2025-12-08
Assigning CNA
Linux
Record state
PUBLISHED
Severity
Critical (CVSS 9.3)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
  • CWE-319Cleartext Transmission of Sensitive InformationBase
Data version
5.2
Document digest
5e885019aa1dd05088064b41e45619c645d3bde11abf4d55675ef1e33339117e

05 Affected products

VendorProductVersionsPlatforms
LinuxLinuxd5af44dde5461d125d1602ac913ab5c6bdf09b8b to < 577a64725bfd77645986168e953d405067ee565b, d5af44dde5461d125d1602ac913ab5c6bdf09b8b to < c27dafc4aa50a29ec927b3aa84ac7b430071f682, d5af44dde5461d125d1602ac913ab5c6bdf09b8b to < 4b69c63f716cfda38e1210e65b68f67f6cee2ddf, d5af44dde5461d125d1602ac913ab5c6bdf09b8b to < 965006103a14703cc42043bbf9b5e0cdf7a468ad, 5.19—

06 References

07 Fixed in

Debian 12

  • linux
    Fixed in 6.1.37-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • linux
    Fixed in 6.3.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • linux
    Fixed in 6.3.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • linux-hwe-edge
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • linux-aws-5.0
    No fix yet
  • linux-aws-5.3
    No fix yet
  • linux-azure
    No fix yet
  • linux-azure-5.3
    No fix yet
  • linux-azure-edge
    No fix yet
  • linux-gcp
    No fix yet
  • linux-gcp-5.3
    No fix yet
  • linux-gke-4.15
    No fix yet
  • linux-gke-5.4
    No fix yet
  • linux-gkeop-5.4
    No fix yet
  • linux-hwe
    No fix yet
  • linux-hwe-edge
    No fix yet
  • linux-oem
    No fix yet
  • linux-oracle-5.0
    No fix yet
  • linux-oracle-5.3
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • linux-aws-5.11
    No fix yet
  • linux-aws-5.13
    No fix yet
  • linux-aws-5.8
    No fix yet
  • linux-azure-5.11
    No fix yet
  • linux-azure-5.13
    No fix yet
  • linux-azure-5.8
    No fix yet
  • linux-azure-fde
    No fix yet
  • linux-gcp-5.11
    No fix yet
  • linux-gcp-5.13
    No fix yet
  • linux-gcp-5.8
    No fix yet
  • linux-gke
    No fix yet
  • linux-gke-5.15
    No fix yet
  • linux-gkeop
    No fix yet
  • linux-gkeop-5.15
    No fix yet
  • linux-hwe-5.11
    No fix yet
  • linux-hwe-5.13
    No fix yet
  • linux-hwe-5.8
    No fix yet
  • linux-intel-5.13
    No fix yet
  • linux-oem-5.10
    No fix yet
  • linux-oem-5.13
    No fix yet
  • linux-oem-5.14
    No fix yet
  • linux-oem-5.6
    No fix yet
  • linux-oracle-5.11
    No fix yet
  • linux-oracle-5.13
    No fix yet
  • linux-oracle-5.8
    No fix yet
  • linux-raspi2
    No fix yet
  • linux-riscv
    No fix yet
  • linux-riscv-5.11
    No fix yet
  • linux-riscv-5.8
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • linux-allwinner-5.19
    No fix yet
  • linux-aws-5.19
    No fix yet
  • linux-aws-6.2
    No fix yet
  • linux-aws-6.5
    No fix yet
  • linux-azure-5.19
    No fix yet
  • linux-azure-6.2
    No fix yet
  • linux-azure-6.5
    No fix yet
  • linux-azure-fde-5.19
    No fix yet
  • linux-azure-fde-6.2
    No fix yet
  • linux-gcp
    No fix yet
  • linux-gcp-5.19
    No fix yet
  • linux-gcp-6.2
    No fix yet
  • linux-gcp-6.5
    No fix yet
  • linux-hwe-5.19
    No fix yet
  • linux-hwe-6.2
    No fix yet
  • linux-hwe-6.5
    No fix yet
  • linux-intel-iot-realtime
    No fix yet
  • linux-lowlatency-hwe-5.19
    No fix yet
  • linux-lowlatency-hwe-6.2
    No fix yet
  • linux-lowlatency-hwe-6.5
    No fix yet
  • linux-nvidia-6.2
    No fix yet
  • linux-nvidia-6.5
    No fix yet
  • linux-oem-5.17
    No fix yet
  • linux-oem-6.0
    No fix yet
  • linux-oem-6.1
    No fix yet
  • linux-oem-6.5
    No fix yet
  • linux-oracle-6.5
    No fix yet
  • linux-realtime
    No fix yet
  • linux-riscv
    No fix yet
  • linux-riscv-5.19
    No fix yet
  • linux-riscv-6.5
    No fix yet
  • linux-starfive-5.19
    No fix yet
  • linux-starfive-6.2
    No fix yet
  • linux-starfive-6.5
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • linux-azure-6.11
    No fix yet
  • linux-gcp-6.11
    No fix yet
  • linux-hwe-6.11
    No fix yet
  • linux-lowlatency-hwe-6.11
    No fix yet
  • linux-nvidia-6.11
    No fix yet
  • linux-oem-6.11
    No fix yet
  • linux-oem-6.8
    No fix yet
  • linux-raspi-realtime
    No fix yet
  • linux-realtime
    No fix yet
  • linux-riscv
    No fix yet
  • linux-riscv-6.14
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • linux-gcp-5.15
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS-preview 22.04 LTS

  • linux-gcp-fips
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS-updates 22.04 LTS

  • linux-gcp-fips
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.