CVEvulnerability
CVE-2026-98476
- Status
- Received
- Published
- 2026-10-18
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
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.
References
- https://git.kernel.org/stable/c/27e396a89f76f742abdbe9f8c4a58a6e806fdf59 git.kernel.org
- https://git.kernel.org/stable/c/44b16b02608058fc72198ac0205969f0f43065df git.kernel.org
- https://git.kernel.org/stable/c/5b76268dac968612f7283d59b539036de955b7d9 git.kernel.org
- https://git.kernel.org/stable/c/5e006ac90a4d331db1dd712b91fec849b45ffc01 git.kernel.org
- https://git.kernel.org/stable/c/5fc54e04dad90b15d0430118b3f288a1d64e66c9 git.kernel.org
- https://git.kernel.org/stable/c/9d8b21820caed9128945fffcedf03e2a4c21eee2 git.kernel.org
- https://git.kernel.org/stable/c/c3bbcb32deecc06ebb1762398399b566d5ff2fc9 git.kernel.org
- https://git.kernel.org/stable/c/dbf30e661ceb9a52c94c85719716391dcc29142a git.kernel.org