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 fraglist. A subsequent zero-length write operation can then cause a kernel warning,...

The vulnerability of the kcm_sendmsg() function in the implementation of the KCM (Kernel Connection Multiplexer) for Linux kernel sockets allows a attacker to cause a service failure.

The vulnerability of the kcmsendmsg function in the net/kcm/kcmsock.c module of the KCM Kernel Connection Multiplexor implementation for Linux kernel sockets is related to the reutilization of previously freed memory due to concurrent access to resources. Exploiting this vulnerability can allow a...

Linux Kernel kcm kcmsock.c kcm_tx_work race condition

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