VYPR
Medium severity5.5NVD Advisory· Published May 1, 2026· Updated Jul 14, 2026

CVE-2026-43035

CVE-2026-43035

Description

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.

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Affected products

22

Patches

Vulnerability mechanics

References

10

News mentions

1