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().
Affected products
linux: linux kernel
References9
- git.kernel.org/stable/c/19b5fa9489b5706bc878c3a522a7f771079e2fa0 Patch
- git.kernel.org/stable/c/35d8b10a25884050bb3b0149b62c3818ec59f77c Patch
- git.kernel.org/stable/c/8834ecb5df22b7ff3c9b0deba7726579bb613f95 Patch
- git.kernel.org/stable/c/eddae8be7944096419c2ae29477a45f767d0fcd4 Patch
- git.kernel.org/stable/c/19b5fa9489b5706bc878c3a522a7f771079e2fa0 Patch
- git.kernel.org/stable/c/35d8b10a25884050bb3b0149b62c3818ec59f77c Patch
- git.kernel.org/stable/c/8834ecb5df22b7ff3c9b0deba7726579bb613f95 Patch
- git.kernel.org/stable/c/eddae8be7944096419c2ae29477a45f767d0fcd4 Patch
- security.netapp.com/advisory/ntap-20250411-0001/
Metrics
- CVSS 3.1
-
4.7
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 55 · as of 5 November 2026
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