# fprobe: Use guard(rcu_sched_notrace) and check rcu_is_watching()

CVE record · `CVE-2026-98861`

- **Identifiers:** `CVE-2026-98861`
- **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, 15:51 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: `56b4cfcf1518245493c60fd39c56978f508f1816 to before a85d0f00671b4d4527317c10ba018680f7d8d673` (git)
  - affected: `657b594b2084b39a4bc6d8493aa2140cb00cea49 to before dd4a0d4993633b45470abf6da4ea0ca563402245` (git)
  - affected: `657b594b2084b39a4bc6d8493aa2140cb00cea49 to before e0a6249190402a28f1e2925a81acf573157d55ef` (git)
  - affected: `a4f6a9005ed6cfd360ef2520430927f05f92ffb0` (git)
  - affected: `6.18.34 to before 6.18.56` (semver)
  - affected: `7.0.11 to before 7.1` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `7.1`
  - unaffected: `before 7.1` (semver)
  - unaffected: `6.18.56 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.10 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 5th 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-2026-98861](https://www.cve.org/CVERecord?id=CVE-2026-98861)
- [NVD: CVE-2026-98861](https://nvd.nist.gov/vuln/detail/CVE-2026-98861)

### References from the CNA

- <https://git.kernel.org/stable/c/a85d0f00671b4d4527317c10ba018680f7d8d673>
- <https://git.kernel.org/stable/c/dd4a0d4993633b45470abf6da4ea0ca563402245>
- <https://git.kernel.org/stable/c/e0a6249190402a28f1e2925a81acf573157d55ef>

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-2026-98861>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-98861/>. Everything for agents: <https://agentprime.io/llms.txt>.