CVE-2024-47704

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

MEDIUM

5.5

CVSS Score

Published: October 21, 2024 at 11:53 AM UTC

Updated: June 17, 2026 at 07:57 AM UTC

2 products affected across 2 vendorsLinux KernelSIMATIC CN 4100

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v < 6.6.554.15 ≤ v < 6.1.1514.15 ≤ v < 6.10.144.15 ≤ v < 6.11.24.15 ≤ v < 6.124.15 ≤ v < 6.6.556.11 ≤ v < 6.11.26.7 ≤ v < 6.10.144.154562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c

Vendor states this is fixed in 0508a4e95ac1aefd851ceb97ea050d8abb93262c (fixed)

Vendor states this is fixed in 0beca868cde8742240cd0038141c30482d2b7eb8 (fixed)

Vendor states this is fixed in 530e29452b955c30cf2102fa4d07420dc6e0c953 (fixed)

Vendor states this is fixed in 8c22a62288194f072eb3a51045b700fce1c18d9e (fixed)

Vendor states this is fixed in be2ca7a2c1561390d28bf2f92654d819659ba510 (fixed)

Vendor states this is fixed in 4.15 (unaffected)

Vendor states this is fixed in 6.1.151 (unaffected)

Vendor states this is fixed in 6.10.14 (unaffected)

Vendor states this is fixed in 6.11.2 (unaffected)

Vendor states this is fixed in 6.12 (unaffected)

Vendor states this is fixed in 6.6.55 (unaffected)

SIMATIC CN 4100 · Siemens