# bpf: Reject tail calls directly from callback frames

CVE record · `CVE-2026-98061`

- **Identifiers:** `CVE-2026-98061`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Sept 2026, 10:24 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: `a6c22c91b6284e4713c0cf5b20ab3c9c71b77ae8 to before 617c8266e49f45747f71e74177646a63f72b7025` (git)
  - affected: `e3245f8990431950d20631c72236d4e8cb2dcde8 to before 96d31b28263c429a56e4de85bcf744a5c320b3a3` (git)
  - affected: `e3245f8990431950d20631c72236d4e8cb2dcde8 to before 266aa4ad0b2e82397cd9045752c9bff03d98eddd` (git)
  - affected: `6.18.2 to before 6.18.53` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.19`
  - unaffected: `before 6.19` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.7 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:** 0.0020, the 9th percentile, on 11 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 25 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98061](https://www.cve.org/CVERecord?id=CVE-2026-98061)
- [NVD: CVE-2026-98061](https://nvd.nist.gov/vuln/detail/CVE-2026-98061)

### References from the CNA

- <https://git.kernel.org/stable/c/617c8266e49f45747f71e74177646a63f72b7025>
- <https://git.kernel.org/stable/c/96d31b28263c429a56e4de85bcf744a5c320b3a3>
- <https://git.kernel.org/stable/c/266aa4ad0b2e82397cd9045752c9bff03d98eddd>

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-2026-98061>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98061/>. Everything for agents: <https://agentprime.io/llms.txt>.