Answer in brief
CVE-2026-98476 records a Unknown severity vulnerability in s390/cio: Fix NULL pointer dereference in ccw_device_get_util_str(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=199652309a4d6635fca19d7528d73ab9e219bd9a <9d8b21820caed9128945fffcedf03e2a4c21eee2 || >=199652309a4d6635fca19d7528d73ab9e219bd9a <5fc54e04dad90b15d0430118b3f288a1d64e66c9 || >=199652309a4d6635fca19d7528d73ab9e219bd9a <27e396a89f76f742abdbe9f8c4a58a6e806fdf59 || >=199652309a4d6635fca19d7528d73ab9e219bd9a <dbf30e661ceb9a52c94c85719716391dcc29142a || >=199652309a4d6635fca19d7528d73ab9e219bd9a <5e006ac90a4d331db1dd712b91fec849b45ffc01 || >=199652309a4d6635fca19d7528d73ab9e219bd9a <c3bbcb32deecc06ebb1762398399b566d5ff2fc9 || >=199652309a4d6635fca19d7528d73ab9e219bd9a <44b16b02608058fc72198ac0205969f0f43065df || >=199652309a4d6635fca19d7528d73ab9e219bd9a <5b76268dac968612f7283d59b539036de955b7d9 | 9d8b21820caed9128945fffcedf03e2a4c21eee2, 5fc54e04dad90b15d0430118b3f288a1d64e66c9, 27e396a89f76f742abdbe9f8c4a58a6e806fdf59, dbf30e661ceb9a52c94c85719716391dcc29142a, 5e006ac90a4d331db1dd712b91fec849b45ffc01, c3bbcb32deecc06ebb1762398399b566d5ff2fc9, 44b16b02608058fc72198ac0205969f0f43065df, 5b76268dac968612f7283d59b539036de955b7d9 |
| Linux/Linuxgeneric | 4.18 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
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.
Quoted source text, attributed separately from HOL analysis.