GHSA-MWMC-PXHM-4FX8
Vulnerability from github – Published: 2026-09-24 18:31 – Updated: 2026-09-25 06:30In the Linux kernel, the following vulnerability has been resolved:
greybus: audio: bound the topology section sizes against the fetched size
gb_audio_gb_get_topology() fetches a topology blob of a module-supplied size, and gbaudio_tplg_parse_data() then walks it by adding the module-supplied size_dais, size_controls and size_widgets fields to form the control, widget and route section offsets. Those le32 sizes are never checked against the fetched blob, so a module reporting a small topology size but large section sizes makes the offsets point past the allocation, and parsing reads out of bounds.
Reject a topology whose section sizes do not fit within the fetched size before it is parsed.
{
"affected": [],
"aliases": [
"CVE-2026-93280"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-24T16:17:25Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngreybus: audio: bound the topology section sizes against the fetched size\n\ngb_audio_gb_get_topology() fetches a topology blob of a module-supplied\nsize, and gbaudio_tplg_parse_data() then walks it by adding the\nmodule-supplied size_dais, size_controls and size_widgets fields to\nform the control, widget and route section offsets. Those le32 sizes\nare never checked against the fetched blob, so a module reporting a\nsmall topology size but large section sizes makes the offsets point\npast the allocation, and parsing reads out of bounds.\n\nReject a topology whose section sizes do not fit within the fetched\nsize before it is parsed.",
"id": "GHSA-mwmc-pxhm-4fx8",
"modified": "2026-09-25T06:30:28Z",
"published": "2026-09-24T18:31:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93280"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/33d8c7b794d2a30637c9d3fcb478f1d3222bef1e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/52daf9de692ebac813d110eb1e677dc0e1f4a5ab"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6f764363b3173d805be11e59a8f23ecee2d420d5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c9191f2e2f35f1209eb2dc24b31129dd47b48c16"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cfcc5a41a9664eb68023aae4cd0d485b256bd7c7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d0f6eaba60705bacd9bb4ce48eab50ef3f546777"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dd5593aee0a0fb353e1164aff7b65e563fe1f232"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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