# CVE-2026-64173 — Linux

> As of 2026-07-19, CVE-2026-64173 is a vulnerability in Linux, EPSS 0.1% (6.0th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-64173 as of 2026-07-19; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-07-19

## What is CVE-2026-64173?

In the Linux kernel, the following vulnerability has been resolved: tracing: Do not call map->ops->elt_free() if elt_alloc() fails In paths where tracing_map_elt_alloc() failed to allocate objects, the map->ops->elt_alloc() call was never successful. In this case, map->ops->elt_free() should not be called.

1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 78 days ago.

## Severity and exploitation probability

- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 6.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 0.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-19

## Is CVE-2026-64173 being exploited?

It currently carries a trending score of 31 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Linux](https://intel.threadlinqs.com/vendors/linux): Linux

## How to fix CVE-2026-64173

No vendor patch reference has been recorded for CVE-2026-64173 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-64173

No threat campaign in the Threadlinqs corpus currently references CVE-2026-64173, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-07-21. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [git.kernel.org](https://git.kernel.org/stable/c/49332e49ad5b20262cc719b03d4123b9362de701)
- [git.kernel.org (b559a218eece132de0c58d444877b5627cbee524)](https://git.kernel.org/stable/c/b559a218eece132de0c58d444877b5627cbee524)
- [git.kernel.org (b427e9f6d81c9341cba23ef92f860f99f830d91d)](https://git.kernel.org/stable/c/b427e9f6d81c9341cba23ef92f860f99f830d91d)
- [git.kernel.org (f383cff9fb382139980bac1bcd3f3f5d59f68435)](https://git.kernel.org/stable/c/f383cff9fb382139980bac1bcd3f3f5d59f68435)
- [git.kernel.org (1a150947f8480262a46c860f1acb9c6597ca7097)](https://git.kernel.org/stable/c/1a150947f8480262a46c860f1acb9c6597ca7097)

_Showing 5 of 8 recorded references._

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-64173
Full detection coverage and IOCs for threats exploiting CVE-2026-64173 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp