# perf/core: Fix a refcount leak in attach_perf_ctx_data()

CVE record · `CVE-2026-98552`

- **Identifiers:** `CVE-2026-98552`
- **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, 15:18 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: `506e64e710ff9573fd2b86686528762b7901b5e4 to before 23250517cd475367653f1e99396967f54c6f1b7c` (git)
  - affected: `506e64e710ff9573fd2b86686528762b7901b5e4 to before 5286d4eb5cd7e10d7d93c3cc596e18bc8ad80f72` (git)
  - affected: `506e64e710ff9573fd2b86686528762b7901b5e4 to before cca4980630b3c7a85f53cb43c6018184ce5d4e37` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.15`
  - unaffected: `before 6.15` (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:** 0.0020, the 9th 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-2026-98552](https://www.cve.org/CVERecord?id=CVE-2026-98552)
- [NVD: CVE-2026-98552](https://nvd.nist.gov/vuln/detail/CVE-2026-98552)

### References from the CNA

- <https://git.kernel.org/stable/c/23250517cd475367653f1e99396967f54c6f1b7c>
- <https://git.kernel.org/stable/c/5286d4eb5cd7e10d7d93c3cc596e18bc8ad80f72>
- <https://git.kernel.org/stable/c/cca4980630b3c7a85f53cb43c6018184ce5d4e37>

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-2026-98552>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98552/>. Everything for agents: <https://agentprime.io/llms.txt>.