CVE-2026-98476
N/AIn 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.
NO EXPLOITATION SIGNALS
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 7th percentile
○ In CISA KEV
○ Public exploit / PoC
Impact if exploited
—CVSS · not scored
- No impact metrics
Proof of concept & exploit code
- github-search Search GitHub for public PoC repos
Test against your own equipment
curl -s https://vulnpedia.com/cve/CVE-2026-98476/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-98476/poc.json
References
Technical & other
- https://git.kernel.org/stable/c/9d8b21820caed9128945fffcedf03e2a4c21eee2
- https://git.kernel.org/stable/c/5fc54e04dad90b15d0430118b3f288a1d64e66c9
- https://git.kernel.org/stable/c/27e396a89f76f742abdbe9f8c4a58a6e806fdf59
- https://git.kernel.org/stable/c/dbf30e661ceb9a52c94c85719716391dcc29142a
- https://git.kernel.org/stable/c/5e006ac90a4d331db1dd712b91fec849b45ffc01
- https://git.kernel.org/stable/c/c3bbcb32deecc06ebb1762398399b566d5ff2fc9
- https://git.kernel.org/stable/c/44b16b02608058fc72198ac0205969f0f43065df
- https://git.kernel.org/stable/c/5b76268dac968612f7283d59b539036de955b7d9