NVD Vulnerability Detail
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CVE-2026-43035
Summary

In the Linux kernel, the following vulnerability has been resolved:

net: sched: cls_api: fix tc_chain_fill_node to initialize tcm_info to zero to prevent an info-leak

When building netlink messages, tc_chain_fill_node() never initializes
the tcm_info field of struct tcmsg. Since the allocation is not zeroed,
kernel heap memory is leaked to userspace through this 4-byte field.

The fix simply zeroes tcm_info alongside the other fields that are
already initialized.

Publication Date May 2, 2026, 12:16 a.m.
Registration Date May 2, 2026, 4:07 a.m.
Last Update May 2, 2026, 12:24 a.m.
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