CVE-2026-98476
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.
Affected versions
Linux kernel versions
4.18
and later are affected. Fixed in
5.10.271,
5.15.222,
6.1.189,
6.6.158,
6.12.112,
6.18.55,
7.2.9,
7.3
and their respective stable series.
References
8 totalFrequently asked questions
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What is CVE-2026-98476?
CVE-2026-98476 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.18 onward and has been patched in 5.10.271, 5.15.222, 6.1.189 and others. CVE-2026-98476 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-98476?
Yes. CVE-2026-98476 has been patched. Fixed versions include 5.10.271, 5.15.222, 6.1.189 and others. If you are running Linux kernel 4.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-98476 actively exploited?
No. CVE-2026-98476 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.