PT-2025-51609 · Linux+4 · Linux Kernel+4

Published 2025-12-16 · Updated 2026-05-26 · CVE-2025-68196

Positive Technologies (AI Summary)

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

Description A flaw exists in the Linux kernel’s DRM/AMD/display component related to stream caching during Link Training (LT) automation. A recent update to LT automation could cause a crash by referencing the current state and calling dc update planes and stream, potentially corrupting the current state. The issue is addressed by caching relevant stream pointers and iterating through them instead of relying on the current state.

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

Exploit

Related Identifiers

CVE-2025-68196

ECHO-B679-94BF-A61B

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8048-1

Affected Products

Amd

Debian

Linuxmint

Linux Kernel

Ubuntu

References · 396

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68196.json · Exploit
• https://ubuntu.com/security/CVE-2025-40223 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40333 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68209 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40294 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40040 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68311 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40106 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40341 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40122 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68183 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40297 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40285 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40193 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40119 · Vendor Advisory