CVE-2026-98476
s390/cio: Fix NULL pointer dereference in ccw_device_get_util_str()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 18, 2026 |
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Affected Versions
Linux / Linux
199652309a4d6635fca19d7528d73ab9e219bd9a < 9d8b21820caed9128945fffcedf03e2a4c21eee2 199652309a4d6635fca19d7528d73ab9e219bd9a < 5fc54e04dad90b15d0430118b3f288a1d64e66c9 199652309a4d6635fca19d7528d73ab9e219bd9a < 27e396a89f76f742abdbe9f8c4a58a6e806fdf59 199652309a4d6635fca19d7528d73ab9e219bd9a < dbf30e661ceb9a52c94c85719716391dcc29142a 199652309a4d6635fca19d7528d73ab9e219bd9a < 5e006ac90a4d331db1dd712b91fec849b45ffc01 199652309a4d6635fca19d7528d73ab9e219bd9a < c3bbcb32deecc06ebb1762398399b566d5ff2fc9 199652309a4d6635fca19d7528d73ab9e219bd9a < 44b16b02608058fc72198ac0205969f0f43065df 199652309a4d6635fca19d7528d73ab9e219bd9a < 5b76268dac968612f7283d59b539036de955b7d9
Linux / Linux
4.18
References
git.kernel.org: https://git.kernel.org/stable/c/9d8b21820caed9128945fffcedf03e2a4c21eee2 git.kernel.org: https://git.kernel.org/stable/c/5fc54e04dad90b15d0430118b3f288a1d64e66c9 git.kernel.org: https://git.kernel.org/stable/c/27e396a89f76f742abdbe9f8c4a58a6e806fdf59 git.kernel.org: https://git.kernel.org/stable/c/dbf30e661ceb9a52c94c85719716391dcc29142a git.kernel.org: https://git.kernel.org/stable/c/5e006ac90a4d331db1dd712b91fec849b45ffc01 git.kernel.org: https://git.kernel.org/stable/c/c3bbcb32deecc06ebb1762398399b566d5ff2fc9 git.kernel.org: https://git.kernel.org/stable/c/44b16b02608058fc72198ac0205969f0f43065df git.kernel.org: https://git.kernel.org/stable/c/5b76268dac968612f7283d59b539036de955b7d9