GHSA-CFJV-HVGG-MWP9
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/cio: Fix NULL pointer dereference in ccw_device_get_util_str()
The channel path registry entry associated with a CHPID may be removed while the subchannel's PMCW still references that CHPID. In this case, chpid_to_chp() can return NULL, leading to a NULL pointer dereference.
Add the missing NULL check before dereferencing the returned pointer.
{
"affected": [],
"aliases": [
"CVE-2026-98476"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-18T16:16:58Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/cio: Fix NULL pointer dereference in ccw_device_get_util_str()\n\nThe channel path registry entry associated with a CHPID may be removed\nwhile the subchannel\u0027s PMCW still references that CHPID. In this case,\nchpid_to_chp() can return NULL, leading to a NULL pointer dereference.\n\nAdd the missing NULL check before dereferencing the returned pointer.",
"id": "GHSA-cfjv-hvgg-mwp9",
"modified": "2026-10-18T18:31:50Z",
"published": "2026-10-18T18:31:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98476"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/27e396a89f76f742abdbe9f8c4a58a6e806fdf59"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/44b16b02608058fc72198ac0205969f0f43065df"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5b76268dac968612f7283d59b539036de955b7d9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5e006ac90a4d331db1dd712b91fec849b45ffc01"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5fc54e04dad90b15d0430118b3f288a1d64e66c9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9d8b21820caed9128945fffcedf03e2a4c21eee2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c3bbcb32deecc06ebb1762398399b566d5ff2fc9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dbf30e661ceb9a52c94c85719716391dcc29142a"
}
],
"schema_version": "1.4.0",
"severity": []
}
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