CVE-2021-47001 (GCVE-0-2021-47001)
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2026-08-05 08:45
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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().
References
Impacted products
Vendor Product Version
Linux Linux Version: 2ae50ad68cd79224198b525f7bd645c9da98b6ff
Version: 2ae50ad68cd79224198b525f7bd645c9da98b6ff
Version: 2ae50ad68cd79224198b525f7bd645c9da98b6ff
Version: 2ae50ad68cd79224198b525f7bd645c9da98b6ff
Version: 3791c5982ba1eebf2900ee7ca7b9a89619c26d54
Version: 5.4.13   ≤
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