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Review reviewHigh

CVE-2025-37903

Linux Linux, linux kernel, debian linux

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix slab-use-after-free in hdcp The HDCP code in amdgpu_dm_hdcp.c copies pointers to amdgpu_dm_connector objects without incrementing the kref reference counts. When using a USB-C dock, and the dock is unplugged, the corresponding amdgpu_dm_connector objects are freed, creating dangling pointers in the HDCP code. When the dock is plugged back, the dangling pointers are dereferenced, resulting in a slab-use-after-free: [ 66.775837] BUG: KASAN: slab-use-after-free in event_property_validate+0x42f/0x6c0 [amdgp...

CVSS
7.8
EPSS
0.17%
6.65% percentile
CISA KEV
Not listed
Published
2025.05.21
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.17%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix slab-use-after-free in hdcp The HDCP code in amdgpu_dm_hdcp.c copies pointers to amdgpu_dm_connector objects without incrementing the kref reference counts. When using a USB-C dock, and the dock is unplugged, the corresponding amdgpu_dm_connector objects are freed, creating dangling pointers in the HDCP code. When the dock is plugged back, the dangling pointers are dereferenced, resulting in a slab-use-after-free: [ 66.775837] BUG: KASAN: slab-use-after-free in event_property_validate+0x42f/0x6c0 [amdgp...

Affected product and versions

Product
Linux Linux, linux kernel, debian linux
Affected versions
>= da3fd7ac0bcf372cc57117bdfcd725cca7ef975a < e25139c4aa5621f2db8e86688c33546cdd885e42, >= da3fd7ac0bcf372cc57117bdfcd725cca7ef975a < bbc66abcd297be67e3d835276e21e6fdc65205a6, >= da3fd7ac0bcf372cc57117bdfcd725cca7ef975a < dd329f04dda35a66e0c9ed462ba91bd5f2c8be70, >= da3fd7ac0bcf372cc57117bdfcd725cca7ef975a < 3a782a83d130ceac6c98a87639ddd89640bff486, >= da3fd7ac0bcf372cc57117bdfcd725cca7ef975a < be593d9d91c5a3a363d456b9aceb71029aeb3f1d, >= 5.5, >= 5.5 < 6.1.138, >= 6.2 < 6.6.90, >= 6.7 < 6.12.28, >= 6.13 < 6.14.6, 6.15, 11.0
Fixed versions
6.1.138, 6.6.90, 6.12.28, 6.14.6

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel, debian linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2025-37903 — Linux Linux, linux kernel, debian linux | SECUFOCUS NOW