CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 4.7. It affects Linux.
CVE
CVE-2021-47001
Severity
MEDIUM
CVSS
4.7
EPSS
0.29%
Linux
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: xprtrdma: Fix cwnd update ordering After a reconnect, the reply handler is opening the cwnd (and thus enabling more RPC Calls to be sent) /before/ rpcrdma_post_recvs() can post enough Receive WRs to receive their replies. This causes an RNR and the new connection is lost immediately. The race is most clearly exposed when KASAN and disconnect injection are enabled. This slows down rpcrdma_rep_create() enough to allow the send side to post a bunch of RPC Calls before the Receive completion handler can invoke ib_post_recv().
Related CVEs
Other vulnerabilities affecting the same vendor(s)