GHSA-7797-CC95-P257
Vulnerability from github – Published: 2024-10-21 18:30 – Updated: 2025-11-03 21:31In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Add NULL check for clk_mgr and clk_mgr->funcs in dcn30_init_hw
This commit addresses a potential null pointer dereference issue in the
dcn30_init_hw function. The issue could occur when dc->clk_mgr or
dc->clk_mgr->funcs is null.
The fix adds a check to ensure dc->clk_mgr and dc->clk_mgr->funcs is
not null before accessing its functions. This prevents a potential null
pointer dereference.
Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:789 dcn30_init_hw() error: we previously assumed 'dc->clk_mgr' could be null (see line 628)
{
"affected": [],
"aliases": [
"CVE-2024-49917"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-21T18:15:13Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Add NULL check for clk_mgr and clk_mgr-\u003efuncs in dcn30_init_hw\n\nThis commit addresses a potential null pointer dereference issue in the\n`dcn30_init_hw` function. The issue could occur when `dc-\u003eclk_mgr` or\n`dc-\u003eclk_mgr-\u003efuncs` is null.\n\nThe fix adds a check to ensure `dc-\u003eclk_mgr` and `dc-\u003eclk_mgr-\u003efuncs` is\nnot null before accessing its functions. This prevents a potential null\npointer dereference.\n\nReported by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:789 dcn30_init_hw() error: we previously assumed \u0027dc-\u003eclk_mgr\u0027 could be null (see line 628)",
"id": "GHSA-7797-cc95-p257",
"modified": "2025-11-03T21:31:22Z",
"published": "2024-10-21T18:30:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49917"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/205e3b96cc9aa9211fd2c849a16245cf236b2d36"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/23cb6139543580dc36743586ca86fbb3f7ab2c9d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5443c83eb8fd2f88c71ced38848fbf744d6206a2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/56c326577971adc3a230f29dfd3aa3abdd505f5d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cba7fec864172dadd953daefdd26e01742b71a6a"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.