PT-2025-49499 · Linux · Linux Kernel

Published 2025-12-08 · Updated 2026-01-28 · CVE-2023-53769

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The encryption algorithms within the kernel’s virt/coco/sev-guest component directly read from and write to shared unencrypted memory. This practice could potentially expose information and allow a host system to compromise message integrity. The issue involves double-buffering of messages. A fix involves copying entire messages in or out before any computation is performed on them.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2023-53769

RHSA-2023:5069

RHSA-2023:7077

SUSE-SU-2026:0263-1

SUSE-SU-2026:0317-1

Affected Products

Linux Kernel

References · 854

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53769.json · Exploit
• https://osv.dev/vulnerability/CVE-2023-53769 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53769 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53769 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-53769 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53769 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0263-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0317-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53769 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53769 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53769 · Vendor Advisory
• https://suse.com/security/cve/CVE-2023-53862 · Note
• https://bugzilla.suse.com/1255970 · Note
• https://suse.com/security/cve/CVE-2023-54025 · Note
• https://suse.com/security/cve/CVE-2023-54040 · Note