CVE-2026-97440
Received Received - Intake

Memory Leak in Linux Kernel QRTR

Publication date: 2026-09-24

Last updated on: 2026-09-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix node refcount leak on ctrl packet alloc failure qrtr_send_resume_tx() calls qrtr_node_lookup() which takes a reference on the returned node. If the subsequent call to qrtr_alloc_ctrl_packet() fails due to memory allocation failure, the function returns -ENOMEM without calling qrtr_node_release() to release the node reference. Add qrtr_node_release(node) before returning on the allocation failure path to properly release the reference.

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Meta Information

Published
2026-09-24
Last Modified
2026-09-24
Generated
2026-09-24
AI Q&A
2026-09-24
EPSS Evaluated
N/A
NVD
CVE-2026-97440
EUVD
EUVD-2026-86053

Affected Vendors & Products

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

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a reference count leak vulnerability in the Linux kernel's network subsystem, specifically in the QRTR (Qualcomm IPC Router) module. When a memory allocation fails during packet processing, a node reference is not properly released, leading to a resource leak.

Impact Analysis

This could lead to system resource exhaustion over time as leaked references accumulate. It may cause performance degradation or unexpected system behavior due to improper memory management in network operations.

Mitigation Strategies

Update the Linux kernel to a patched version that includes the fix for CVE-2026-97440. Monitor system logs for memory allocation failures in the qrtr module as a potential indicator of exploitation attempts.

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