CVE-2025-39675 describes a null pointer dereference vulnerability in the Linux kernel's AMD display driver (drm/amd/display). Specifically, the mod_hdcp_hdcp1_create_session() function fails to check the return value of get_first_active_display(), leading to a crash if the display list is empty. This affects various Linux distributions, including Debian. With a CVSS score of 5.5 (MEDIUM), this vulnerability has a local attack vector, low attack complexity, and can lead to a denial of service (system crash). There is no impact on confidentiality or integrity. Currently, there is no known active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Despite this, the vulnerability has garnered some community discussion and media coverage, indicating a degree of awareness.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.8, < 5.15.190CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.16, < 6.1.149CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 6.2, < 6.6.103CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 6.7, < 6.12.44CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 6.13, < 6.16.4CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
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Feb 24, 2026drm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session()
Sep 9, 2025kernel: drm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session()
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