FKIE_CVE-2025-39675

Vulnerability from fkie_nvd - Published: 2025-09-05 18:15 - Updated: 2026-01-07 21:51
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session() The function mod_hdcp_hdcp1_create_session() calls the function get_first_active_display(), but does not check its return value. The return value is a null pointer if the display list is empty. This will lead to a null pointer dereference. Add a null pointer check for get_first_active_display() and return MOD_HDCP_STATUS_DISPLAY_NOT_FOUND if the function return null. This is similar to the commit c3e9826a2202 ("drm/amd/display: Add null pointer check for get_first_active_display()"). (cherry picked from commit 5e43eb3cd731649c4f8b9134f857be62a416c893)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2af45aadb7b5d3852c76e2d1e985289ada6f48bfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ee86b764c54e0d6a5464fb023b630fdf20869cdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/857b8387a9777e42b36e0400be99b54c251eaf9aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/97fc94c5fd3c6ac5a13e457d38ee247737b8c4bdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ee0373b20bb67b1f00a1b25ccd24c8ac996b6446Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.17
linux linux_kernel 6.17
debian debian_linux 11.0
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session()\n\nThe function mod_hdcp_hdcp1_create_session() calls the function\nget_first_active_display(), but does not check its return value.\nThe return value is a null pointer if the display list is empty.\nThis will lead to a null pointer dereference.\n\nAdd a null pointer check for get_first_active_display() and return\nMOD_HDCP_STATUS_DISPLAY_NOT_FOUND if the function return null.\n\nThis is similar to the commit c3e9826a2202\n(\"drm/amd/display: Add null pointer check for get_first_active_display()\").\n\n(cherry picked from commit 5e43eb3cd731649c4f8b9134f857be62a416c893)"
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  "lastModified": "2026-01-07T21:51:02.960",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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