CVE-2026-64054

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: shaper: reject duplicate leaves in GROUP request<br /> <br /> net_shaper_nl_group_doit() does not deduplicate NET_SHAPER_A_LEAVES<br /> entries. When userspace supplies the same leaf handle twice, the same<br /> old-parent pointer lands twice in old_nodes[]. The cleanup loop double<br /> frees the parent. Of course the same parent may still be in old_nodes[]<br /> twice if we are moving multiple of its leaves.<br /> <br /> Note that this patch also implicitly fixes the fact that the<br /> i &gt;= leaves_count path forgets to set ret.