Report: - mpls: add seqcount to protect the platform_label{,s} pair CVE-2026-43042
CVE ID :CVE-2026-43042 Published : May 1, 2026, 3:16 p.m. | 14 minutes ago Description :In the Linux kernel, the following vulnerability has been resolved: mpls: add seqcount to protect the platform_label{,s} pair The RCU-protected codepaths (mpls_forward, mpls_dump_routes) can have an inconsistent view of platform_labels vs platform_label in case of a concurrent resize (resize_platform_label_table, under platform_mutex). This can lead to OOB accesses. This patch adds a seqcount, so that we get a consistent snapshot. Note that mpls_label_ok is also susceptible to this, so the check against RTA_DST in rtm_to_route_config, done outside platform_mutex, is not sufficient. This value gets passed to mpls_label_ok once more in both mpls_route_add and mpls_route_del, so there is no issue, but that additional check must not be removed. Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...