GHSA-HQ4V-3XXP-HFHG
Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31In the Linux kernel, the following vulnerability has been resolved:
accel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain
struct amdxdna_cmd_chain contains a flexible array annotated with __counted_by(command_count). Since the structure is stored in shared AMDXDNA_BO_SHARE memory, userspace can modify command_count concurrently. If command_count is changed to zero, the bounds check generated from __counted_by may fail and trigger a kernel panic.
Remove __counted_by to avoid relying on the userspace-controlled command_count for the flexible array bounds check.
{
"affected": [],
"aliases": [
"CVE-2026-98146"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-25T11:17:46Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain\n\nstruct amdxdna_cmd_chain contains a flexible array annotated with\n__counted_by(command_count). Since the structure is stored in shared\nAMDXDNA_BO_SHARE memory, userspace can modify command_count concurrently.\nIf command_count is changed to zero, the bounds check generated from\n__counted_by may fail and trigger a kernel panic.\n\nRemove __counted_by to avoid relying on the userspace-controlled\ncommand_count for the flexible array bounds check.",
"id": "GHSA-hq4v-3xxp-hfhg",
"modified": "2026-09-25T12:31:38Z",
"published": "2026-09-25T12:31:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98146"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/52f3e086760a9a3e02a46a10b57caffd73b1c204"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b3709d354545e70388177500761f92d906c4dfd6"
}
],
"schema_version": "1.4.0",
"severity": []
}
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