Vulnerability Information
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Vulnerability Title
mptcp: cope racing subflow creation in mptcp_rcv_space_adjust
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: cope racing subflow creation in mptcp_rcv_space_adjust Additional active subflows - i.e. created by the in kernel path manager - are included into the subflow list before starting the 3whs. A racing recvmsg() spooling data received on an already established subflow would unconditionally call tcp_cleanup_rbuf() on all the current subflows, potentially hitting a divide by zero error on the newly created ones. Explicitly check that the subflow is in a suitable state before invoking tcp_cleanup_rbuf().
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux kernel 安全漏洞
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mptcp组件中mptcp_rcv_space_adjust函数在子流创建过程中存在竞态条件，导致tcp_cleanup_rbuf在状态不适宜的子流上被无条件调用，可能触发除以零错误。
CVSS Information
N/A
Vulnerability Type
N/A