Report: Complete Guide to CVE-2026-43041 - net: qrtr: replace qrtr_tx_flow radix_tree with xarray to fix memory leak
CVE ID :CVE-2026-43041 Published : May 1, 2026, 3:16 p.m. | 14 minutes ago 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] Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...