Description

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Check link_res->hpo_dp_link_enc before using it

[WHAT & HOW]
Functions dp_enable_link_phy and dp_disable_link_phy can pass link_res
without initializing hpo_dp_link_enc and it is necessary to check for
null before dereferencing.

This fixes 2 FORWARD_NULL issues reported by Coverity.

Classification

CVE ID: CVE-2024-47704

CVSS Base Severity: MEDIUM

CVSS Base Score: 5.5

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.03% (probability of being exploited)

EPSS Percentile: 6.94% (scored less or equal to compared to others)

EPSS Date: 2025-06-02 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: none

SSVC Technical Impact: partial

SSVC Automatable: false

References

https://nvd.nist.gov/vuln/detail/CVE-2024-47704
https://git.kernel.org/stable/c/be2ca7a2c1561390d28bf2f92654d819659ba510
https://git.kernel.org/stable/c/530e29452b955c30cf2102fa4d07420dc6e0c953
https://git.kernel.org/stable/c/0508a4e95ac1aefd851ceb97ea050d8abb93262c
https://git.kernel.org/stable/c/0beca868cde8742240cd0038141c30482d2b7eb8

Timeline