IT

Tracker / CVE-2026-43041

CVE-2026-43041

Medium 5.5

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/20260225071623.41275-1-jiayuan.chen@linux.dev/T/

Affected products and versions

linux linux_kernel
linux linux_kernel · 5.11 → 5.15.203
linux linux_kernel · 5.16 → 6.1.168
linux linux_kernel · 5.6 → 5.10.253
linux linux_kernel · 6.13 → 6.18.22
linux linux_kernel · 6.19 → 6.19.12
linux linux_kernel · 6.2 → 6.6.134
linux linux_kernel · 6.7 → 6.12.81

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References