GHSA-52XX-JR85-G6WQ
Vulnerability from github – Published: 2026-09-24 18:31 – Updated: 2026-09-24 18:31In the Linux kernel, the following vulnerability has been resolved:
octeontx2-af: fix out-of-bounds read setting MSI-X irq affinity
rvu_register_interrupts() walks every MSI-X vector and uses strstr() to match "Mbox" or "FLR" in irq_name before pinning those interrupts to CPU 0. irq_name is a per-vector NAME_SIZE buffer, but not every slot is populated before this loop runs. strstr() keeps scanning until it finds a NUL terminator, so an uninitialized slot can trigger a KASAN slab-out-of-bounds read at boot when debug options are enabled.
Use strnstr() with NAME_SIZE to bound the search within each vector's name buffer.
{
"affected": [],
"aliases": [
"CVE-2026-93246"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-24T16:17:20Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix out-of-bounds read setting MSI-X irq affinity\n\nrvu_register_interrupts() walks every MSI-X vector and uses strstr()\nto match \"Mbox\" or \"FLR\" in irq_name before pinning those interrupts\nto CPU 0. irq_name is a per-vector NAME_SIZE buffer, but not every\nslot is populated before this loop runs. strstr() keeps scanning until\nit finds a NUL terminator, so an uninitialized slot can trigger a KASAN\nslab-out-of-bounds read at boot when debug options are enabled.\n\nUse strnstr() with NAME_SIZE to bound the search within each vector\u0027s\nname buffer.",
"id": "GHSA-52xx-jr85-g6wq",
"modified": "2026-09-24T18:31:24Z",
"published": "2026-09-24T18:31:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93246"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2f460aa0211e97c011ef0cfe5016f8f2a2ed059b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4d5df98369c5f45710b786499f8bd7ffc3196433"
}
],
"schema_version": "1.4.0",
"severity": []
}
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