In the Linux kernel, the following vulnerability has been resolved:
RDMA/siw: Fix use-after-free in siw_accept()
siw_accept() looks up the QP supplied by userspace. If that QP is
already in RTS, the function jumps to error cleanup before associating
the incoming CEP with it.
The cleanup tests whether qp->cep is non-NULL and assumes the current
call installed the association. However, qp->cep can point to the CEP
of an existing connection. The cleanup then drops a reference from the
incoming cep, not qp->cep. Once the incoming endpoint loses its
remaining references, this can free it before the subsequent cep->qp
store, causing a use-after-free. It also clears the existing QP
association.
Only release the association reference when qp->cep is the incoming
CEP. This preserves an existing association and avoids accessing the
freed endpoint.
RDMA/siw: Fix use-after-free in siw_accept()
siw_accept() looks up the QP supplied by userspace. If that QP is
already in RTS, the function jumps to error cleanup before associating
the incoming CEP with it.
The cleanup tests whether qp->cep is non-NULL and assumes the current
call installed the association. However, qp->cep can point to the CEP
of an existing connection. The cleanup then drops a reference from the
incoming cep, not qp->cep. Once the incoming endpoint loses its
remaining references, this can free it before the subsequent cep->qp
store, causing a use-after-free. It also clears the existing QP
association.
Only release the association reference when qp->cep is the incoming
CEP. This preserves an existing association and avoids accessing the
freed endpoint.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 17 Sep 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix use-after-free in siw_accept() siw_accept() looks up the QP supplied by userspace. If that QP is already in RTS, the function jumps to error cleanup before associating the incoming CEP with it. The cleanup tests whether qp->cep is non-NULL and assumes the current call installed the association. However, qp->cep can point to the CEP of an existing connection. The cleanup then drops a reference from the incoming cep, not qp->cep. Once the incoming endpoint loses its remaining references, this can free it before the subsequent cep->qp store, causing a use-after-free. It also clears the existing QP association. Only release the association reference when qp->cep is the incoming CEP. This preserves an existing association and avoids accessing the freed endpoint. | |
| Title | RDMA/siw: Fix use-after-free in siw_accept() | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
|
Projects
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MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-09-17T16:08:19.350Z
Reserved: 2026-09-11T19:38:34.798Z
Link: CVE-2026-90292
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-17T17:17:26.400
Modified: 2026-09-17T17:17:26.400
Link: CVE-2026-90292
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses
No weakness.