drm/amd/display: Check link_res->hpo_dp_link_enc before using it
Summary
| CVE | CVE-2024-47704 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2024-10-21 12:15:06 UTC |
| Updated | 2026-05-12 12:17:14 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 5.5 MEDIUM from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Problem Types: CWE-476
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c 8c22a62288194f072eb3a51045b700fce1c18d9e git | Not specified |
| CNA | Linux | Linux | affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c be2ca7a2c1561390d28bf2f92654d819659ba510 git | Not specified |
| CNA | Linux | Linux | affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c 530e29452b955c30cf2102fa4d07420dc6e0c953 git | Not specified |
| CNA | Linux | Linux | affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c 0508a4e95ac1aefd851ceb97ea050d8abb93262c git | Not specified |
| CNA | Linux | Linux | affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c 0beca868cde8742240cd0038141c30482d2b7eb8 git | Not specified |
| CNA | Linux | Linux | affected 4.15 | Not specified |
| CNA | Linux | Linux | unaffected 4.15 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.151 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.55 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.10.14 6.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.11.2 6.11.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12 * original_commit_for_fix | Not specified |
| ADP | Siemens | SIMATIC CN 4100 | affected V5.0 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| lists.debian.org/debian-lts-announce/2025/10/msg00008.html | af854a3a-2127-422b-91ae-364da2661108 | lists.debian.org | |
| git.kernel.org/stable/c/be2ca7a2c1561390d28bf2f92654d819659ba510 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/8c22a62288194f072eb3a51045b700fce1c18d9e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| cert-portal.siemens.com/productcert/html/ssa-032379.html | 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e | cert-portal.siemens.com | |
| git.kernel.org/stable/c/0508a4e95ac1aefd851ceb97ea050d8abb93262c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/0beca868cde8742240cd0038141c30482d2b7eb8 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/530e29452b955c30cf2102fa4d07420dc6e0c953 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.