# bpf: Restrict CO-RE poisoning to relocatable instructions

CVE record · `CVE-2026-98626`

- **Identifiers:** `CVE-2026-98626`
- **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: `d7a252708dbc950ca2064310217e8b9f85846e2f to before a8c47e62d9aea2d47a09e06c1682c59c21b92449` (git)
  - affected: `d7a252708dbc950ca2064310217e8b9f85846e2f to before d3219c229d16900cef936adad28633c98946e432` (git)
  - affected: `d7a252708dbc950ca2064310217e8b9f85846e2f to before a0b79cdfcf34b53c85bac2d3cf022fc1342eeca0` (git)
  - affected: `d7a252708dbc950ca2064310217e8b9f85846e2f to before f2a24101e89dd0804e717da7c1bd6af513698aa2` (git)
  - affected: `d7a252708dbc950ca2064310217e8b9f85846e2f to before 2d7d04357c41aa49a5ac658fcc207439f2ad6456` (git)
  - affected: `d7a252708dbc950ca2064310217e8b9f85846e2f to before 8e4cbcca1e0a2fc5e6c8edb68e0cf5f2587f9319` (git)
  - affected: `d7a252708dbc950ca2064310217e8b9f85846e2f to before 394ae398337c5f87e567f6cd63b937fc2b2f6ddc` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.6`
  - unaffected: `before 5.6` (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:** 0.0021, the 11th 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-2026-98626](https://www.cve.org/CVERecord?id=CVE-2026-98626)
- [NVD: CVE-2026-98626](https://nvd.nist.gov/vuln/detail/CVE-2026-98626)

### References from the CNA

- <https://git.kernel.org/stable/c/a8c47e62d9aea2d47a09e06c1682c59c21b92449>
- <https://git.kernel.org/stable/c/d3219c229d16900cef936adad28633c98946e432>
- <https://git.kernel.org/stable/c/a0b79cdfcf34b53c85bac2d3cf022fc1342eeca0>
- <https://git.kernel.org/stable/c/f2a24101e89dd0804e717da7c1bd6af513698aa2>
- <https://git.kernel.org/stable/c/2d7d04357c41aa49a5ac658fcc207439f2ad6456>
- <https://git.kernel.org/stable/c/8e4cbcca1e0a2fc5e6c8edb68e0cf5f2587f9319>
- <https://git.kernel.org/stable/c/394ae398337c5f87e567f6cd63b937fc2b2f6ddc>

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-2026-98626>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98626/>. Everything for agents: <https://agentprime.io/llms.txt>.