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Review reviewHigh

CVE-2024-56608

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix out-of-bounds access in 'dcn21_link_encoder_create' An issue was identified in the dcn21_link_encoder_create function where an out-of-bounds access could occur when the hpd_source index was used to reference the link_enc_hpd_regs array. This array has a fixed size and the index was not being checked against the array's bounds before accessing it. This fix adds a conditional check to ensure that the hpd_source index is within the valid range of the link_enc_hpd_regs array. If the index is out of bounds,...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.12.28
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix out-of-bounds access in 'dcn21_link_encoder_create' An issue was identified in the dcn21_link_encoder_create function where an out-of-bounds access could occur when the hpd_source index was used to reference the link_enc_hpd_regs array. This array has a fixed size and the index was not being checked against the array's bounds before accessing it. This fix adds a conditional check to ensure that the hpd_source index is within the valid range of the link_enc_hpd_regs array. If the index is out of bounds,...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 280f722601c8bf4d8a9c62dd727cf3a2fd0a47be, >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < b19ca8425a4b86e8f0d7c33c4e87ef7b0ebdaa29, >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 5bd410c21037107b83ffbb51dd2d6460f9de9ed1, >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 08ac5fdb9c6dc34d0ed4bc64ce3c5c3d411b3b53, >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < f01ddd589e162979421e6914b1c74018633f01e0, >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 63de35a8fcfca59ae8750d469a7eb220c7557baf, >= 4.15, < 6.12.5
Fixed versions
6.12.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel 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-129