# tracing: Free histogram var refs regardless of how often they are referenced

CVE record · `CVE-2026-97922`

- **Identifiers:** `CVE-2026-97922`
- **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, 10:22 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: `8bcebc77e85f3d7536f96845a0fe94b1dddb6af0 to before a1f1d64a0a9791c842c4646253daf6ac0313eac7` (git)
  - affected: `8bcebc77e85f3d7536f96845a0fe94b1dddb6af0 to before b513a4c60a7aa1f4b4c2a48544ab003cb36f1e94` (git)
  - affected: `8bcebc77e85f3d7536f96845a0fe94b1dddb6af0 to before e7b6d67b43caee9183a4374d23641578ea556e6c` (git)
  - affected: `8bcebc77e85f3d7536f96845a0fe94b1dddb6af0 to before 4cff53bb19412c6f2d90b50678de5c3903f7f96a` (git)
  - affected: `8bcebc77e85f3d7536f96845a0fe94b1dddb6af0 to before 94bbd65da4ae26592fa1977a74ee94218ab02a26` (git)
  - affected: `8bcebc77e85f3d7536f96845a0fe94b1dddb6af0 to before 4bddcb346a6cf4615ca77f69a589623b877ca267` (git)
  - affected: `ce28d664054df01997baace61d1defca77689798` (git)
  - affected: `bf470f051556b610265ea02ad2102de75e8e619c` (git)
  - affected: `4.19.100 to before 4.20` (semver)
  - affected: `5.4.16 to before 5.5` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.5`
  - unaffected: `before 5.5` (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: `7.2.7 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:** 0.0021, the 11th percentile, on 12 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-2026-97922](https://www.cve.org/CVERecord?id=CVE-2026-97922)
- [NVD: CVE-2026-97922](https://nvd.nist.gov/vuln/detail/CVE-2026-97922)

### References from the CNA

- <https://git.kernel.org/stable/c/a1f1d64a0a9791c842c4646253daf6ac0313eac7>
- <https://git.kernel.org/stable/c/b513a4c60a7aa1f4b4c2a48544ab003cb36f1e94>
- <https://git.kernel.org/stable/c/e7b6d67b43caee9183a4374d23641578ea556e6c>
- <https://git.kernel.org/stable/c/4cff53bb19412c6f2d90b50678de5c3903f7f96a>
- <https://git.kernel.org/stable/c/94bbd65da4ae26592fa1977a74ee94218ab02a26>
- <https://git.kernel.org/stable/c/4bddcb346a6cf4615ca77f69a589623b877ca267>

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-2026-97922>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-97922/>. Everything for agents: <https://agentprime.io/llms.txt>.