# arm64: kprobes: Allow reentering kprobes while single-stepping

CVE record · `CVE-2026-98888`

- **Identifiers:** `CVE-2026-98888`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 23 Oct 2026
- **Updated:** 26 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 11:37 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: `2dd0e8d2d2a157dbc83295a78336c2217110f2f8 to before bb0fe9121aa0824211aafa33c7d0151fd25ddb75` (git)
  - affected: `2dd0e8d2d2a157dbc83295a78336c2217110f2f8 to before f96a0606de6bcc8d937b80e6470fd7a174c17e26` (git)
  - affected: `2dd0e8d2d2a157dbc83295a78336c2217110f2f8 to before 1f342b3e44c3035a837b53b217d816f7511c0d0a` (git)
  - affected: `2dd0e8d2d2a157dbc83295a78336c2217110f2f8 to before c8e84e292ed4cfc199824146da71bb4397b02a1f` (git)
  - affected: `2dd0e8d2d2a157dbc83295a78336c2217110f2f8 to before 68774caca799e9695db56d426c69acebd041c2ed` (git)
  - affected: `2dd0e8d2d2a157dbc83295a78336c2217110f2f8 to before a21bf9cb893126e8d9730995708d0be5eb167652` (git)
  - affected: `2dd0e8d2d2a157dbc83295a78336c2217110f2f8 to before 23f851ac0078a908bf3422d6467ebc1db5828c46` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.8`
  - unaffected: `before 4.8` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (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: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2 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:** 0.0019, the 8th percentile, on 6 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 23 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98888](https://www.cve.org/CVERecord?id=CVE-2026-98888)
- [NVD: CVE-2026-98888](https://nvd.nist.gov/vuln/detail/CVE-2026-98888)

### References from the CNA

- <https://git.kernel.org/stable/c/bb0fe9121aa0824211aafa33c7d0151fd25ddb75>
- <https://git.kernel.org/stable/c/f96a0606de6bcc8d937b80e6470fd7a174c17e26>
- <https://git.kernel.org/stable/c/1f342b3e44c3035a837b53b217d816f7511c0d0a>
- <https://git.kernel.org/stable/c/c8e84e292ed4cfc199824146da71bb4397b02a1f>
- <https://git.kernel.org/stable/c/68774caca799e9695db56d426c69acebd041c2ed>
- <https://git.kernel.org/stable/c/a21bf9cb893126e8d9730995708d0be5eb167652>
- <https://git.kernel.org/stable/c/23f851ac0078a908bf3422d6467ebc1db5828c46>

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-2026-98888>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98888/>. Everything for agents: <https://agentprime.io/llms.txt>.