# tracing: Free histogram the var ref when its initialization fails

CVE record · `CVE-2026-97923`

- **Identifiers:** `CVE-2026-97923`
- **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: `656fe2ba85e81d00e4447bf77b8da2be3c47acb2 to before 608b7751926ec08fae6a1ac4e7308195da68c362` (git)
  - affected: `656fe2ba85e81d00e4447bf77b8da2be3c47acb2 to before 4870f9071c9ea3c1423a07741b85a794db30d672` (git)
  - affected: `656fe2ba85e81d00e4447bf77b8da2be3c47acb2 to before 352f84a381e7b4651b30366e93cb858f3fa9c91a` (git)
  - affected: `656fe2ba85e81d00e4447bf77b8da2be3c47acb2 to before 4924328d6991f25b65bb7c8ff5d56c2a9b254851` (git)
  - affected: `656fe2ba85e81d00e4447bf77b8da2be3c47acb2 to before 74375caa20fe5165807b4334c783d1790b01f02a` (git)
  - affected: `656fe2ba85e81d00e4447bf77b8da2be3c47acb2 to before 222abcbe7866fef04563b6eb89fb21f627dcbc77` (git)
  - affected: `656fe2ba85e81d00e4447bf77b8da2be3c47acb2 to before a69baeac38677270656e85753d93856a076dee57` (git)
  - affected: `656fe2ba85e81d00e4447bf77b8da2be3c47acb2 to before 516001d53e6b2ea95a251ee2ef54a1a689a3fd58` (git)
  - affected: `836717841a30d7845cdf9cb806ee0ff3bfa7135a` (git)
  - affected: `4.19.100 to before 4.20` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.0`
  - unaffected: `before 5.0` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (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: `6.12.111 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-2026-97923](https://www.cve.org/CVERecord?id=CVE-2026-97923)
- [NVD: CVE-2026-97923](https://nvd.nist.gov/vuln/detail/CVE-2026-97923)

### References from the CNA

- <https://git.kernel.org/stable/c/608b7751926ec08fae6a1ac4e7308195da68c362>
- <https://git.kernel.org/stable/c/4870f9071c9ea3c1423a07741b85a794db30d672>
- <https://git.kernel.org/stable/c/352f84a381e7b4651b30366e93cb858f3fa9c91a>
- <https://git.kernel.org/stable/c/4924328d6991f25b65bb7c8ff5d56c2a9b254851>
- <https://git.kernel.org/stable/c/74375caa20fe5165807b4334c783d1790b01f02a>
- <https://git.kernel.org/stable/c/222abcbe7866fef04563b6eb89fb21f627dcbc77>
- <https://git.kernel.org/stable/c/a69baeac38677270656e85753d93856a076dee57>
- <https://git.kernel.org/stable/c/516001d53e6b2ea95a251ee2ef54a1a689a3fd58>

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-2026-97923>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-97923/>. Everything for agents: <https://agentprime.io/llms.txt>.