UnratedFix available
s390/cio: Fix NULL pointer dereference in ccw_device_get_util_str()
Type: advisorySources: OSV
In 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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.271, 5.15.222, 6.1.189, 6.12.112, 6.18.55, 6.6.158, 7.2.9
- CVEs
- CVE-2026-98476
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 09:50 UTC · Revision 1
Source evidence
s390/cio: Fix NULL pointer dereference in ccw_device_get_util_str()
core-osv · Original sourcePublished 18 Oct 2026, 15:15 UTC
In 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.
osv:CVE-2026-98476
Kernel
Fixed versions: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.55, 7.2.9
Complete source record
{
"id": "24e1a107634e0b383f931d56e0b65fa66f92578ef11a6f05703f9dbb7d139861",
"url": "https://osv.dev/vulnerability/CVE-2026-98476",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "s390/cio: Fix NULL pointer dereference in ccw_device_get_util_str()",
"summary": "In 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.",
"evidence": "osv:CVE-2026-98476",
"products": [
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"severity": "unknown",
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"package": {
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"ecosystem": "Linux"
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"database_specific": {
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"modified": "2026-10-28T02:30:43.574818282Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/44b16b02608058fc72198ac0205969f0f43065df",
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"https://git.kernel.org/stable/c/c3bbcb32deecc06ebb1762398399b566d5ff2fc9",
"https://git.kernel.org/stable/c/dbf30e661ceb9a52c94c85719716391dcc29142a",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98476.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-98476",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98476.json"
}
},
"related_cves": [
{
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"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 511537,
"published_at": "2026-10-18T15:15:45.1+00:00"
}