GHSA-V4QR-C46C-6QG3
Vulnerability from github – Published: 2026-10-18 18:31 – Updated: 2026-10-18 18:31In the Linux kernel, the following vulnerability has been resolved:
s390/debug: Fix NULL pointer dereference in debug_info_copy()
When debug_register_static() fails, it clears areas, active_pages and active_entries but leaves the area bounds unchanged. Copying such an area, either by opening its view file or via debug_dump(), makes debug_info_copy() dereference the NULL pointers.
Skip the copy loop when the source has no areas.
{
"affected": [],
"aliases": [
"CVE-2026-98593"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-18T16:17:11Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/debug: Fix NULL pointer dereference in debug_info_copy()\n\nWhen debug_register_static() fails, it clears areas, active_pages and\nactive_entries but leaves the area bounds unchanged. Copying such an\narea, either by opening its view file or via debug_dump(), makes\ndebug_info_copy() dereference the NULL pointers.\n\nSkip the copy loop when the source has no areas.",
"id": "GHSA-v4qr-c46c-6qg3",
"modified": "2026-10-18T18:31:55Z",
"published": "2026-10-18T18:31:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98593"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/012bfcd5a51082d5a65f096dfb9ca652b5267965"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/33f706884821da9cb55b650b7b1d4f2bdf800137"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9c6af88fbefbe77608b77409df23a1617e28398c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a19bede30f0da5ae56782edac62b5998a7434cba"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c593f38e1cdb92f87d01be4c4e5ac12417b1454b"
}
],
"schema_version": "1.4.0",
"severity": []
}
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