RDMA/siw: Fix use-after-free in siw_accept()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-90292
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:26 UTC
Updated2026-09-18 18:17:52 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001600000 probability, percentile 0.055380000 (date 2026-09-21)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 6c52fdc244b5ccc468006fd65a504d4ee33743c7 d57db36e74cca4763e1c2c0c6eb9f84d19813879 git Not specified
CNA Linux Linux affected 6c52fdc244b5ccc468006fd65a504d4ee33743c7 59de5502f32895ffe9c45530327ed997b90fdf06 git Not specified
CNA Linux Linux affected 6c52fdc244b5ccc468006fd65a504d4ee33743c7 a89d120615e711ce8fce551fd291c2f387666735 git Not specified
CNA Linux Linux affected 6c52fdc244b5ccc468006fd65a504d4ee33743c7 b9e7d3d9fdb2bfcfb25d93529fdf766536b37c78 git Not specified
CNA Linux Linux affected 6c52fdc244b5ccc468006fd65a504d4ee33743c7 8f286a8094ee32c415f9ecd2c20765beb8a18c79 git Not specified
CNA Linux Linux affected 6c52fdc244b5ccc468006fd65a504d4ee33743c7 de603f01d9ccf823e575b013ffd86ebedca9a8c5 git Not specified
CNA Linux Linux affected 6c52fdc244b5ccc468006fd65a504d4ee33743c7 561651d6a15588cee2040755f253faca2463415c git Not specified
CNA Linux Linux affected 6c52fdc244b5ccc468006fd65a504d4ee33743c7 a9394971825933074032794a5feee5211509c774 git Not specified
CNA Linux Linux affected 5.3 Not specified
CNA Linux Linux unaffected 5.3 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/de603f01d9ccf823e575b013ffd86ebedca9a8c5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a9394971825933074032794a5feee5211509c774 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/561651d6a15588cee2040755f253faca2463415c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8f286a8094ee32c415f9ecd2c20765beb8a18c79 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/59de5502f32895ffe9c45530327ed997b90fdf06 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d57db36e74cca4763e1c2c0c6eb9f84d19813879 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b9e7d3d9fdb2bfcfb25d93529fdf766536b37c78 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a89d120615e711ce8fce551fd291c2f387666735 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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