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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-43041 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: replace qrtr_tx_flow radix_tree with xarray to fix memory leak __radix_tree_create() allocates and links intermediate nodes into the tree one by one. If a subsequent allocation fails, the already-linked nodes remain in the tree with no corresponding leaf entry. These orphaned internal nodes are never reclaimed because radix_tree_for_each_slot() only visits slots containing leaf values. The radix_tree API is deprecated in favor of xarray. As suggested by Matthew Wilcox, migrate qrtr_tx_flow from radix_tree to xarray instead of fixing the radix_tree itself [1]. xarray properly handles cleanup of internal nodes — xa_destroy() frees all internal xarray nodes when the qrtr_node is released, preventing the leak. [1] https://lore.kernel.org/all/[email protected]/T/


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0fda873092b541bb5a9b87d728a2429f863f8cfa kernel.org Patch 
https://git.kernel.org/stable/c/2428083101f6883f979cceffa76cd8440751ffe6 kernel.org Patch 
https://git.kernel.org/stable/c/4b75ff0aedd6ade1018ad4a3a9d8336794e36e42 kernel.org Patch 
https://git.kernel.org/stable/c/5d2249eefaca59908fe3c264b8eca526424dcfbe kernel.org Patch 
https://git.kernel.org/stable/c/69402908e277dd164bf8d7c8fd0513c0fac28e9e kernel.org Patch 
https://git.kernel.org/stable/c/f2664bc4f0f356f17c2094587a2b3665e3867e44 kernel.org Patch 
https://git.kernel.org/stable/c/f2dd9aaf6e2861337f5835f877a5b2becaf4b015 kernel.org Patch 
https://git.kernel.org/stable/c/ff134cc43972d7ddceff8cfd36cf6b9eaafc00b3 kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-401 Missing Release of Memory after Effective Lifetime cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-43041
NVD Published Date:
05/01/2026
NVD Last Modified:
05/08/2026
Source:
kernel.org