CVE-2026-98352 is a vulnerability in Linux Kernel
Published on October 6, 2026
RDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted
In the Linux kernel, the following vulnerability has been resolved:
RDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted
The client borrows shared CQ credits in the ADDR_RESOLVED handler via
ib_cq_pool_get(), before the peer is connected. create_cm() can return
-ERESTARTSYS from wait_event_interruptible_timeout() without destroying
the CM ID. The init_conns() and stop-and-destroy paths then call
destroy_con_cq_qp() while cq is still NULL (no PUT) and only afterwards
rdma_destroy_id().
CMA serializes the handler against rdma_destroy_id() with handler_mutex,
but that does not order the GET against destroy_con_cq_qp(). If
ADDR_RESOLVED has already passed the DESTROYING check, it can take
con_mutex, GET credits, and then lose the con to kfree. Device
unregister later hits WARN_ON(cq->cqe_used) in ib_cq_pool_cleanup().
Set a per-connection flag under con_mutex before CQ/QP teardown so a
racing ADDR_RESOLVED cannot borrow credits after teardown has begun.
Products Associated with CVE-2026-98352
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Affected Versions
Linux:- Version 3b89e92c2a95a39c38a3808f4528e502a39bd94d and below a82cca40139d9fcae8208901856bd5bb4051f097 is affected.
- Version 3b89e92c2a95a39c38a3808f4528e502a39bd94d and below 74c4ed55e61f1b65ddbebc5b635d136461a1c3da is affected.
- Version 3b89e92c2a95a39c38a3808f4528e502a39bd94d and below 6f8020fe7465f49e234a576c04e415e9d08c7878 is affected.
- Version 3b89e92c2a95a39c38a3808f4528e502a39bd94d and below 31024e158b45358370a0a14ed96589e6aa62d6cb is affected.
- Version 3b89e92c2a95a39c38a3808f4528e502a39bd94d and below 8f253d5893f991742464b9e7203c43fc08d0aa11 is affected.
- Version 3b89e92c2a95a39c38a3808f4528e502a39bd94d and below bf88ac4867050112a6c819c8d1a7209bf48ef427 is affected.
- Version 3b89e92c2a95a39c38a3808f4528e502a39bd94d and below 2ae16aaa78b5edc6e6d0904c84fd9cdfb762bcda is affected.
- Version 5.13 is affected.
- Before 5.13 is unaffected.
- Version 5.15.222, <= 5.15.* is unaffected.
- Version 6.1.189, <= 6.1.* is unaffected.
- Version 6.6.158, <= 6.6.* is unaffected.
- Version 6.12.112, <= 6.12.* is unaffected.
- Version 6.18.54, <= 6.18.* is unaffected.
- Version 7.2.8, <= 7.2.* is unaffected.
- Version 7.3-rc4, <= * is unaffected.