CVE-2026-64173
Received Received - Intake

Memory Corruption in Linux Kernel Tracing

Publication date: 2026-07-19

Last updated on: 2026-07-19

Assigner: kernel.org

Description
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.

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Meta Information

Published
2026-07-19
Last Modified
2026-07-19
Generated
2026-07-20
AI Q&A
2026-07-19
EPSS Evaluated
N/A
NVD
CVE-2026-64173
EUVD
EUVD-2026-45858

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves a flaw in the tracing subsystem. When tracing_map_elt_alloc() fails to allocate memory for objects, the system incorrectly attempts to call map->ops->elt_free() even though elt_alloc() was never successful. This improper cleanup could lead to undefined behavior or resource leaks.

Detection Guidance

This vulnerability is specific to the Linux kernel's tracing subsystem and does not have network-based detection methods. To detect it, check if your kernel version includes the fix for this issue. Use the command 'uname -r' to find your kernel version and compare it against patched versions.

Impact Analysis

The impact depends on the system's usage of the tracing subsystem. If exploited, it could cause crashes, data corruption, or unexpected behavior in kernel operations. Systems relying on tracing for debugging or monitoring may experience instability or reduced performance.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards as it is a low-level kernel memory management issue without documented data exposure or privacy implications.

Mitigation Strategies

Update your Linux kernel to a version that includes the fix for this vulnerability. This typically involves running your system's package manager to install the latest kernel updates, followed by a reboot to apply the changes.

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