CVE-2026-98593
Published Oct 18, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: s390/debug: Fix NULL pointer dereference in debug_info_copy() When debug_register_static() fails, it clears areas, active_pages and active_entries but leaves the area bounds unchanged. Copying such an area, either by opening its view file or via debug_dump(), makes debug_info_copy() dereference the NULL pointers. Skip the copy loop when the source has no areas.
Is your site exposed to CVE-2026-98593?
Run a free security scan — no signup, results in seconds.
References
Other References
https://git.kernel.org/stable/c/012bfcd5a51082d5a65f096dfb9ca652b5267965
https://git.kernel.org/stable/c/13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225
https://git.kernel.org/stable/c/2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b
https://git.kernel.org/stable/c/33f706884821da9cb55b650b7b1d4f2bdf800137
https://git.kernel.org/stable/c/9c6af88fbefbe77608b77409df23a1617e28398c
https://git.kernel.org/stable/c/a19bede30f0da5ae56782edac62b5998a7434cba
https://git.kernel.org/stable/c/c593f38e1cdb92f87d01be4c4e5ac12417b1454b
Frequently Asked Questions
What is CVE-2026-98593? +
In the Linux kernel, the following vulnerability has been resolved:
s390/debug: Fix NULL pointer dereference in debug_info_copy()
When debug_register_static() fails, it clears areas, active_pages and
active_entries but leaves the area bounds unchanged. Copying such an
area, either by opening its view file or via debug_dump(), makes
debug_info_copy() dereference the NULL pointers.
Skip the copy loop when the source has no areas.
How do I check if I'm vulnerable to CVE-2026-98593? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.