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

CVE record · `CVE-2026-98593`

- **Identifiers:** `CVE-2026-98593`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:19 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `d72541f945127b4873dace501406a1bc8cd8e1e9 to before 13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225` (git)
  - affected: `d72541f945127b4873dace501406a1bc8cd8e1e9 to before a19bede30f0da5ae56782edac62b5998a7434cba` (git)
  - affected: `d72541f945127b4873dace501406a1bc8cd8e1e9 to before 33f706884821da9cb55b650b7b1d4f2bdf800137` (git)
  - affected: `d72541f945127b4873dace501406a1bc8cd8e1e9 to before 2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b` (git)
  - affected: `d72541f945127b4873dace501406a1bc8cd8e1e9 to before 9c6af88fbefbe77608b77409df23a1617e28398c` (git)
  - affected: `d72541f945127b4873dace501406a1bc8cd8e1e9 to before c593f38e1cdb92f87d01be4c4e5ac12417b1454b` (git)
  - affected: `d72541f945127b4873dace501406a1bc8cd8e1e9 to before 012bfcd5a51082d5a65f096dfb9ca652b5267965` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.15`
  - unaffected: `before 5.15` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.55 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.9 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0017, the 6th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 18 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98593](https://www.cve.org/CVERecord?id=CVE-2026-98593)
- [NVD: CVE-2026-98593](https://nvd.nist.gov/vuln/detail/CVE-2026-98593)

### References from the CNA

- <https://git.kernel.org/stable/c/13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225>
- <https://git.kernel.org/stable/c/a19bede30f0da5ae56782edac62b5998a7434cba>
- <https://git.kernel.org/stable/c/33f706884821da9cb55b650b7b1d4f2bdf800137>
- <https://git.kernel.org/stable/c/2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b>
- <https://git.kernel.org/stable/c/9c6af88fbefbe77608b77409df23a1617e28398c>
- <https://git.kernel.org/stable/c/c593f38e1cdb92f87d01be4c4e5ac12417b1454b>
- <https://git.kernel.org/stable/c/012bfcd5a51082d5a65f096dfb9ca652b5267965>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-98593>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98593/>. Everything for agents: <https://agentprime.io/llms.txt>.