CVE-2026-98593

s390/debug: Fix NULL pointer dereference in debug_info_copy()

State: Published
Severity: Not scored
Published: Oct 18, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	d72541f945127b4873dace501406a1bc8cd8e1e9 to before 13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225Affected d72541f945127b4873dace501406a1bc8cd8e1e9 to before a19bede30f0da5ae56782edac62b5998a7434cbaAffected d72541f945127b4873dace501406a1bc8cd8e1e9 to before 33f706884821da9cb55b650b7b1d4f2bdf800137Affected d72541f945127b4873dace501406a1bc8cd8e1e9 to before 2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52bAffected d72541f945127b4873dace501406a1bc8cd8e1e9 to before 9c6af88fbefbe77608b77409df23a1617e28398cAffected d72541f945127b4873dace501406a1bc8cd8e1e9 to before c593f38e1cdb92f87d01be4c4e5ac12417b1454bAffected d72541f945127b4873dace501406a1bc8cd8e1e9 to before 012bfcd5a51082d5a65f096dfb9ca652b5267965Affected
LinuxLinux	5.15Affected before 5.15Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.112 through 6.12.Not affected 6.18.55 through 6.18.Not affected 7.2.9 through 7.2.Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

d72541f945127b4873dace501406a1bc8cd8e1e9 to before 13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225Affected
d72541f945127b4873dace501406a1bc8cd8e1e9 to before a19bede30f0da5ae56782edac62b5998a7434cbaAffected
d72541f945127b4873dace501406a1bc8cd8e1e9 to before 33f706884821da9cb55b650b7b1d4f2bdf800137Affected
d72541f945127b4873dace501406a1bc8cd8e1e9 to before 2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52bAffected
d72541f945127b4873dace501406a1bc8cd8e1e9 to before 9c6af88fbefbe77608b77409df23a1617e28398cAffected
d72541f945127b4873dace501406a1bc8cd8e1e9 to before c593f38e1cdb92f87d01be4c4e5ac12417b1454bAffected
d72541f945127b4873dace501406a1bc8cd8e1e9 to before 012bfcd5a51082d5a65f096dfb9ca652b5267965Affected

LinuxLinux

5.15Affected
before 5.15Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.112 through 6.12.*Not affected
6.18.55 through 6.18.*Not affected
7.2.9 through 7.2.*Not affected
7.3 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.