[NVD] CVE-2026-23255 (MEDIUM 5.5) — In the Linux kernel, the following vulnerability has been resolved: net: add proper RCU protection to /proc/net/ptype Yin Fengwei reported an RCU stall in ptype_seq_show() and provided a patch. Real issue is that ptype_seq_next() and ptype_seq_show() violate RCU rules. ptype_

CVE-2026-23255 CVSS: 5.5 MEDIUM Published: 2026-03-18T18:16:23.687

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

net: add proper RCU protection to /proc/net/ptype

Yin Fengwei reported an RCU stall in ptype_seq_show() and provided a patch.

Real issue is that ptype_seq_next() and ptype_seq_show() violate RCU rules.

ptype_seq_show() runs under rcu_read_lock(), and reads pt-