What is CVE-2026-98593?

CVE-2026-98593 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 5.15 onward and patched in 5.15.222, 6.1.189, 6.6.158 and others. CVE-2026-98593 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-98593?

CVE-2026-98593 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-98593?

Yes, CVE-2026-98593 has been patched. Fixed versions include 5.15.222, 6.1.189, 6.6.158 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-98593 actively exploited?

CVE-2026-98593 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

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.

Package Linux Kernel

Published 2026-10-18

Last modified 2026-10-18

Patch available

Yes

Affected versions

Linux kernel versions 5.15 and later are affected. Fixed in 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.55, 7.2.9, 7.3 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 5.15.222 5.15.x ✓ 6.1.189 6.1.x ✓ 6.6.158 6.6.x ✓ 6.12.112 6.12.x ✓ 6.18.55 6.18.x ✓ 7.2.9 7.2.x ✓ 7.3

References

7 total

Showing 5 of 7 references View all on NVD

Frequently asked questions

What is CVE-2026-98593?

CVE-2026-98593 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.15 onward and has been patched in 5.15.222, 6.1.189, 6.6.158 and others. CVE-2026-98593 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-98593?

Yes. CVE-2026-98593 has been patched. Fixed versions include 5.15.222, 6.1.189, 6.6.158 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-98593 actively exploited?

No. CVE-2026-98593 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.