CVE-2026-98593

medium

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.

References

https://git.kernel.org/stable/c/c593f38e1cdb92f87d01be4c4e5ac12417b1454b

https://git.kernel.org/stable/c/a19bede30f0da5ae56782edac62b5998a7434cba

https://git.kernel.org/stable/c/9c6af88fbefbe77608b77409df23a1617e28398c

https://git.kernel.org/stable/c/33f706884821da9cb55b650b7b1d4f2bdf800137

https://git.kernel.org/stable/c/2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b

https://git.kernel.org/stable/c/13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225

https://git.kernel.org/stable/c/012bfcd5a51082d5a65f096dfb9ca652b5267965

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-103638

Details

Source: Mitre, NVD

Published: 2026-10-18

Updated: 2026-10-19

Risk Information

CVSS v2

Base Score: 4.7

Vector: CVSS2#AV:L/AC:M/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00172