CVE-2026-45889 | Linux Kernel up to 6.18.13/6.19.3 mptcp_rcvbuf_grow race condition (WID-SEC-2026-1700)
A vulnerability marked as critical has been reported in Linux Kernel up to 6.18.13/6.19.3. This issue affects the function mptcp_rcvbuf_grow. This manipulation causes race condition.
The identification of this vulnerability is CVE-2026-45889. The attack needs to be done within the local network. There is no exploit available.
It is suggested to upgrade the affected component.