---
id: CVE-2026-64173
title: 'tracing: Do not call map->ops->elt_free() if elt_alloc() fails'
summary: |-
  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 ne…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 <
    49332e49ad5b20262cc719b03d4123b9362de701
  - >-
    Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 <
    b559a218eece132de0c58d444877b5627cbee524
  - >-
    Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 <
    b427e9f6d81c9341cba23ef92f860f99f830d91d
  - >-
    Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 <
    f383cff9fb382139980bac1bcd3f3f5d59f68435
  - >-
    Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 <
    1a150947f8480262a46c860f1acb9c6597ca7097
  - >-
    Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 <
    798183376d9d3e278a270ea0e75a5769c8f145d9
  - >-
    Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 <
    b6723339736320b2e1784258ad4490cec7aac11a
  - >-
    Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 <
    8f0f5c4fb9df0e19a341e0c6ed8dc4fda9124f03
  - Linux 4.17
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:31:06.202987Z'
published: '2026-07-19'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:34:27.868Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-64173'
references:
  - url: 'https://git.kernel.org/stable/c/49332e49ad5b20262cc719b03d4123b9362de701'
  - url: 'https://git.kernel.org/stable/c/b559a218eece132de0c58d444877b5627cbee524'
  - url: 'https://git.kernel.org/stable/c/b427e9f6d81c9341cba23ef92f860f99f830d91d'
  - url: 'https://git.kernel.org/stable/c/f383cff9fb382139980bac1bcd3f3f5d59f68435'
  - url: 'https://git.kernel.org/stable/c/1a150947f8480262a46c860f1acb9c6597ca7097'
  - url: 'https://git.kernel.org/stable/c/798183376d9d3e278a270ea0e75a5769c8f145d9'
  - url: 'https://git.kernel.org/stable/c/b6723339736320b2e1784258ad4490cec7aac11a'
  - url: 'https://git.kernel.org/stable/c/8f0f5c4fb9df0e19a341e0c6ed8dc4fda9124f03'
tags:
  - cve.org
epss: 0.00114
epssPercentile: 0.01496
ingestedAt: '2026-11-06T16:57:43.230Z'
---

## Overview

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.

## Affected

- `Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 < 49332e49ad5b20262cc719b03d4123b9362de701`
- `Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 < b559a218eece132de0c58d444877b5627cbee524`
- `Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 < b427e9f6d81c9341cba23ef92f860f99f830d91d`
- `Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 < f383cff9fb382139980bac1bcd3f3f5d59f68435`
- `Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 < 1a150947f8480262a46c860f1acb9c6597ca7097`
- `Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 < 798183376d9d3e278a270ea0e75a5769c8f145d9`
- `Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 < b6723339736320b2e1784258ad4490cec7aac11a`
- `Linux >= 2734b629525a9dae5bf217cbf0a9651da93d2108 < 8f0f5c4fb9df0e19a341e0c6ed8dc4fda9124f03`
- `Linux 4.17`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.