s390/cio: Fix NULL pointer dereference in ccw_device_get_util_str()
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.
CVE-2026-98476
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98476
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "199652309a4d6635fca19d7528d73ab9e219bd9a",
"lessThan": "9d8b21820caed9128945fffcedf03e2a4c21eee2",
"versionType": "git"
},
{
"status": "affected",
"version": "199652309a4d6635fca19d7528d73ab9e219bd9a",
"lessThan": "5fc54e04dad90b15d0430118b3f288a1d64e66c9",
"versionType": "git"
},
{
"status": "affected",
"version": "199652309a4d6635fca19d7528d73ab9e219bd9a",
"lessThan": "27e396a89f76f742abdbe9f8c4a58a6e806fdf59",
"versionType": "git"
},
{
"status": "affected",
"version": "199652309a4d6635fca19d7528d73ab9e219bd9a",
"lessThan": "dbf30e661ceb9a52c94c85719716391dcc29142a",
"versionType": "git"
},
{
"status": "affected",
"version": "199652309a4d6635fca19d7528d73ab9e219bd9a",
"lessThan": "5e006ac90a4d331db1dd712b91fec849b45ffc01",
"versionType": "git"
},
{
"status": "affected",
"version": "199652309a4d6635fca19d7528d73ab9e219bd9a",
"lessThan": "c3bbcb32deecc06ebb1762398399b566d5ff2fc9",
"versionType": "git"
},
{
"status": "affected",
"version": "199652309a4d6635fca19d7528d73ab9e219bd9a",
"lessThan": "44b16b02608058fc72198ac0205969f0f43065df",
"versionType": "git"
},
{
"status": "affected",
"version": "199652309a4d6635fca19d7528d73ab9e219bd9a",
"lessThan": "5b76268dac968612f7283d59b539036de955b7d9",
"versionType": "git"
}
],
"programFiles": [
"drivers/s390/cio/device_ops.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.55",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/s390/cio/device_ops.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98476
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38525 · Revision 1
- Added to Heist Feed
- Publisher date