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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-98593

s390/debug: Fix NULL pointer dereference in debug_info_copy()CVE-2026-98593

Answer in brief

CVE-2026-98593 records a Unknown severity vulnerability in s390/debug: Fix NULL pointer dereference in debug_info_copy(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 18, 2026Updated Oct 19, 2026Source checked Oct 25, 2026First seen by HOL Oct 18, 2026Material review Oct 19, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 25, 2026
References
7 linked sources
Open source record

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=d72541f945127b4873dace501406a1bc8cd8e1e9 <13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225 || >=d72541f945127b4873dace501406a1bc8cd8e1e9 <a19bede30f0da5ae56782edac62b5998a7434cba || >=d72541f945127b4873dace501406a1bc8cd8e1e9 <33f706884821da9cb55b650b7b1d4f2bdf800137 || >=d72541f945127b4873dace501406a1bc8cd8e1e9 <2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b || >=d72541f945127b4873dace501406a1bc8cd8e1e9 <9c6af88fbefbe77608b77409df23a1617e28398c || >=d72541f945127b4873dace501406a1bc8cd8e1e9 <c593f38e1cdb92f87d01be4c4e5ac12417b1454b || >=d72541f945127b4873dace501406a1bc8cd8e1e9 <012bfcd5a51082d5a65f096dfb9ca652b526796513decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225, a19bede30f0da5ae56782edac62b5998a7434cba, 33f706884821da9cb55b650b7b1d4f2bdf800137, 2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b, 9c6af88fbefbe77608b77409df23a1617e28398c, c593f38e1cdb92f87d01be4c4e5ac12417b1454b, 012bfcd5a51082d5a65f096dfb9ca652b5267965
Linux/Linuxgeneric5.15Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 18, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.