GHSA-W7W7-6353-385Q
Vulnerability from github – Published: 2024-10-21 18:30 – Updated: 2026-10-30 15:31In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Implement bounds check for stream encoder creation in DCN401
'stream_enc_regs' array is an array of dcn10_stream_enc_registers structures. The array is initialized with four elements, corresponding to the four calls to stream_enc_regs() in the array initializer. This means that valid indices for this array are 0, 1, 2, and 3.
The error message 'stream_enc_regs' 4 <= 5 below, is indicating that there is an attempt to access this array with an index of 5, which is out of bounds. This could lead to undefined behavior
Here, eng_id is used as an index to access the stream_enc_regs array. If eng_id is 5, this would result in an out-of-bounds access on the stream_enc_regs array.
Thus fixing Buffer overflow error in dcn401_stream_encoder_create
Found by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn401/dcn401_resource.c:1209 dcn401_stream_encoder_create() error: buffer overflow 'stream_enc_regs' 4 <= 5
{
"affected": [],
"aliases": [
"CVE-2024-49970"
],
"database_specific": {
"cwe_ids": [
"CWE-129"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-21T18:15:17Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Implement bounds check for stream encoder creation in DCN401\n\n\u0027stream_enc_regs\u0027 array is an array of dcn10_stream_enc_registers\nstructures. The array is initialized with four elements, corresponding\nto the four calls to stream_enc_regs() in the array initializer. This\nmeans that valid indices for this array are 0, 1, 2, and 3.\n\nThe error message \u0027stream_enc_regs\u0027 4 \u003c= 5 below, is indicating that\nthere is an attempt to access this array with an index of 5, which is\nout of bounds. This could lead to undefined behavior\n\nHere, eng_id is used as an index to access the stream_enc_regs array. If\neng_id is 5, this would result in an out-of-bounds access on the\nstream_enc_regs array.\n\nThus fixing Buffer overflow error in dcn401_stream_encoder_create\n\nFound by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn401/dcn401_resource.c:1209 dcn401_stream_encoder_create() error: buffer overflow \u0027stream_enc_regs\u0027 4 \u003c= 5",
"id": "GHSA-w7w7-6353-385q",
"modified": "2026-10-30T15:31:56Z",
"published": "2024-10-21T18:30:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49970"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/00872dcc2a3e4a42155c2f3b7f21952a62301035"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/664f12d9ebdfdfb9c05e5cb31f268e92fb9042fe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b219b46ad42df1dea9258788bcfea37181f3ccb2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bdf606810210e8e07a0cdf1af3c467291363b295"
}
],
"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"
}
]
}
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