CVE-2026-43244

A flaw was found in the Linux kernel's Kernel Connection Multiplexer (KCM) module. A local user could trigger an issue where, during partial sendmsg operations, an empty network buffer (skb) is incorrectly left in the frag_list. A subsequent zero-length write operation can then cause a kernel warning, potentially leading to a denial of service (DoS) by causing system instability.